.form-group{margin-bottom:20px;}.cartoon-label{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-weight:700;color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:0.5px;padding-left:4px;}.cartoon-input,.cartoon-select,.cartoon-textarea{width:100%;padding:14px 18px;border:1px solid var(--border-color);background-color:var(--bg-tertiary);border-radius:var(--border-radius-sm);font-family:var(--font-primary);font-size:16px;color:var(--text-primary);transition:var(--transition-fast);outline:none;}.cartoon-input:focus,.cartoon-select:focus,.cartoon-textarea:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px rgba(88,101,242,0.25);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary-color) 25%,transparent);}.cartoon-textarea{min-height:100px;resize:vertical;}.cartoon-textarea-code{width:100%;height:300px;padding:16px;font-family:'Monaco','Consolas',monospace;background-color:var(--bg-rail);color:var(--text-primary);border-radius:var(--border-radius-sm);border:1px solid var(--border-color);line-height:1.5;}.cartoon-input-chat{flex:1;padding:14px 20px;border:1px solid var(--border-color);border-radius:var(--border-radius-round);background-color:var(--bg-tertiary);font-size:16px;color:var(--text-primary);transition:var(--transition-fast);outline:none;}.cartoon-input-chat:focus{border-color:var(--primary-color);color:var(--text-primary);box-shadow:0 0 0 2px rgba(88,101,242,0.25);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary-color) 25%,transparent);}.language-selection-row{display:flex;align-items:flex-end;gap:10px;}.language-selection-row 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solid transparent;font-weight:600;}.checkbox-option input:checked + .checkbox-label,.radio-option input:checked + .radio-label{background-color:var(--bg-secondary);border-color:var(--primary-color);color:var(--primary-color);box-shadow:var(--shadow-sm);}.cartoon-range{-webkit-appearance:none;width:100%;height:8px;background:var(--bg-tertiary);border-radius:var(--border-radius-round);outline:none;margin-top:10px;}.cartoon-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:2px solid var(--bg-secondary);box-shadow:var(--shadow-sm);transition:transform 0.1s;}.cartoon-range::-webkit-slider-thumb:hover{transform:scale(1.2);}.custom-select-container{position:relative;width:100%;font-family:var(--font-primary);}.custom-select-trigger{display:flex;justify-content:space-between;align-items:center;padding:10px 15px;background-color:var(--bg-tertiary);border:1px solid 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var(--border-color);border-top:none;border-bottom-left-radius:var(--border-radius-sm);border-bottom-right-radius:var(--border-radius-sm);z-index:var(--z-dropdown);max-height:200px;overflow-y:auto;display:none;box-shadow:var(--shadow-md);}.custom-select-container.open .custom-select-options{display:block;border-color:var(--primary-color);animation:slideDown 0.2s ease-out;}.custom-select-option{padding:10px 15px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background-color 0.2s;}.custom-select-option:hover{background-color:var(--bg-tertiary);}.custom-select-option.selected{background-color:rgba(88,101,242,0.08);background-color:color-mix(in srgb,var(--primary-color) 8%,transparent);}.custom-select-option.selected .lang-name{color:var(--primary-color);}@keyframes slideDown{from{opacity:0;transform:translateY(-10px);}to{opacity:1;transform:translateY(0);}}[data-theme="dark"] .custom-select-option:hover{background-color:var(--hover-bg);}[data-theme="dark"] 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ease;flex-shrink:0;}.cartoon-btn-icon:hover{background-color:color-mix(in srgb,var(--text-primary) 8%,transparent);color:var(--text-primary);}.cartoon-btn-icon:active,.cartoon-btn-icon.active{background-color:var(--primary-color);color:#fff;}.sidebar .sidebar-btn{display:flex;flex-direction:row;align-items:center;width:100%;text-align:left;justify-content:flex-start;margin-bottom:1px;padding:10px 10px;border:none;border-radius:var(--border-radius-xs);background-color:transparent;color:var(--text-secondary);font-size:14px;font-weight:500;gap:10px;white-space:nowrap;transition:background-color 0.15s ease,color 0.15s ease;}@media (min-width:769px){.sidebar .sidebar-btn{padding:8px 10px;font-size:13px;gap:8px;border-radius:8px;}}.sidebar .sidebar-btn > i:first-child{width:var(--pixel-icon-md);text-align:center;font-size:18px;flex-shrink:0;}.sidebar .sidebar-btn:hover{background-color:color-mix(in srgb,var(--text-primary) 7%,transparent);color:var(--text-primary);}.sidebar 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infinite;}.ptt-dialog-icon img{width:44px;height:44px;z-index:1;background:none !important;animation:ptt-icon-glow 1.5s ease-in-out infinite;}.ptt-dialog[data-animation="pulse"] .ptt-dialog-icon img{animation:ptt-icon-glow 1.1s ease-in-out infinite;}@keyframes ptt-icon-glow{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.1);opacity:0.85;}}.ptt-pulse-ring{display:none !important;}.ptt-dialog-text{font-size:1.4em;font-weight:600;color:var(--text-primary);margin-bottom:10px;font-family:var(--font-heading);}.ptt-dialog-hint{font-size:0.95em;color:var(--text-secondary);}[data-theme="dark"] .ptt-dialog{background:transparent;}[data-theme="dark"] .ptt-dialog-content{background:var(--bg-secondary);border-color:var(--border-color);}[data-theme="dark"] .ptt-dialog-icon{background:none !important;background-color:transparent !important;}[data-theme="dark"] .ptt-dialog-icon i{color:var(--success-color);background:none !important;}[data-theme="dark"] .ptt-pulse-ring{display:none !important;}.cartoon-btn-mode{width:40px;height:40px;border-radius:var(--border-radius-sm);background-color:var(--bg-tertiary);color:var(--text-secondary);margin-right:5px;flex-shrink:0;}.cartoon-btn-mode.active{background-color:var(--primary-color);color:#fff;box-shadow:var(--shadow-sm);}.btn-link{color:var(--primary-color);font-weight:600;text-decoration:underline;}.btn-link:hover{color:var(--primary-hover);}#voice-to-text-btn.active,#enhance-voice-to-text-btn.active{background-color:var(--success-color);border-color:var(--success-color);color:#fff;box-shadow:var(--shadow-sm);}#voice-to-text-btn.inactive,#enhance-voice-to-text-btn.inactive{background-color:var(--danger-color);border-color:var(--danger-color);color:#fff;opacity:0.9;}#voice-to-text-btn.inactive:hover,#enhance-voice-to-text-btn.inactive:hover{opacity:1;}#voice-to-text-btn.speech-detected,#enhance-voice-to-text-btn.speech-detected{position:relative;background-color:var(--success-color) !important;color:#fff !important;box-shadow:var(--shadow-sm) !important;animation:speech-detected-pulse 0.8s ease-in-out infinite !important;overflow:visible;}#voice-to-text-btn.speech-detected::after,#enhance-voice-to-text-btn.speech-detected::after{content:'';position:absolute;inset:-5px;border-radius:inherit;border:2px solid color-mix(in srgb,var(--success-color) 70%,transparent);pointer-events:none;animation:speech-ripple 0.8s ease-out infinite;}[data-theme="dark"] #voice-to-text-btn.speech-detected,[data-theme="dark"] #enhance-voice-to-text-btn.speech-detected{background-color:var(--success-color) !important;box-shadow:0 0 0 4px color-mix(in srgb,var(--success-color) 40%,transparent) !important;}#voice-to-text-btn.speech-detected i,#enhance-voice-to-text-btn.speech-detected i{animation:mic-icon-breathe 0.6s ease-in-out infinite;}@media (prefers-reduced-motion:reduce){.cartoon-btn-ptt.recording,.ptt-dialog-icon i,#voice-to-text-btn.speech-detected,#voice-to-text-btn.speech-detected i,#enhance-voice-to-text-btn.speech-detected,#enhance-voice-to-text-btn.speech-detected i{animation:none;}}[data-theme="dark"] .cartoon-btn-ptt,[data-theme="dark"] .cartoon-btn-ptt.recording{color:#1B1B23;}[data-theme="dark"] #voice-to-text-btn.active,[data-theme="dark"] #voice-to-text-btn.inactive,[data-theme="dark"] #voice-to-text-btn.speech-detected,[data-theme="dark"] #enhance-voice-to-text-btn.active,[data-theme="dark"] #enhance-voice-to-text-btn.inactive,[data-theme="dark"] #enhance-voice-to-text-btn.speech-detected{color:#fff !important;}.chat-classroom-root{--chat-surface:rgba(245,250,240,0.90);--chat-surface-solid:#F5FAF0;--chat-ink-border:color-mix(in srgb,#3A4658 16%,transparent);--chat-ink-soft:color-mix(in srgb,#3A4658 10%,transparent);--chat-bubble-ai:#FFF9F1;--chat-toolbar-bg:color-mix(in srgb,#FFFCF6 94%,transparent);--chat-compose-bg:#FFFFFF;--chat-tool-hover:color-mix(in srgb,#2F6FED 10%,transparent);}[data-theme="dark"] .chat-classroom-root{--chat-surface:rgba(36,48,40,0.90);--chat-surface-solid:#242830;--chat-ink-border:color-mix(in srgb,#E8EEF6 16%,transparent);--chat-ink-soft:color-mix(in srgb,#E8EEF6 10%,transparent);--chat-bubble-ai:#243041;--chat-toolbar-bg:color-mix(in srgb,#1A222E 94%,transparent);--chat-compose-bg:#151C27;--chat-tool-hover:color-mix(in srgb,#7AA2FF 14%,transparent);}.chat-classroom-root{flex-direction:column;height:100%;min-height:0;max-height:100%;}html.app-shell-viewport-bound.keyboard-open #chat-interface.chat-classroom-root,html.app-shell-viewport-bound.keyboard-open #enhance-classroom.chat-classroom-root,html.app-shell-viewport-bound.keyboard-open #live-interface.chat-classroom-root{height:var(--chat-shell-frozen-height);min-height:var(--chat-shell-frozen-height);max-height:var(--chat-shell-frozen-height);flex-shrink:0;}html.app-shell-viewport-bound.keyboard-open body[data-active-panel="chat-interface"] .main-content,html.app-shell-viewport-bound.keyboard-open body[data-active-panel="enhance-classroom"] .main-content,html.app-shell-viewport-bound.keyboard-open body[data-active-panel="live-interface"] .main-content{height:var(--main-content-frozen-height);min-height:var(--main-content-frozen-height);max-height:var(--main-content-frozen-height);flex-shrink:0;}html.app-shell-viewport-bound.keyboard-open .chat-classroom-root .chat-container{height:var(--chat-shell-frozen-height);min-height:var(--chat-shell-frozen-height);max-height:var(--chat-shell-frozen-height);position:relative;flex-shrink:0;}html.app-shell-viewport-bound.keyboard-open #app .chat-classroom-root .chat-toolbar{position:relative;width:100%;align-self:stretch;flex-shrink:0;z-index:30;}@media (min-width:769px){html.app-shell-viewport-bound.keyboard-open #app .chat-classroom-root .chat-toolbar{flex-wrap:nowrap;}html.app-shell-viewport-bound.keyboard-open #app .chat-classroom-root .chat-toolbar-compose{flex:1 1 auto;order:0;min-width:0;}html.app-shell-viewport-bound.keyboard-open #app .chat-classroom-root .chat-toolbar-left,html.app-shell-viewport-bound.keyboard-open #app .chat-classroom-root .chat-toolbar-right{flex:0 0 auto;}}#chat-interface,#live-interface{position:relative;}#live-interface.chat-classroom-root{overflow:hidden;min-height:0;}#chat-interface.content-panel.active,#live-interface.chat-classroom-root.content-panel.active{animation:none;}.chat-classroom-root .chat-container{flex:1;display:flex;flex-direction:column;padding:var(--spacing-md);box-sizing:border-box;overflow:hidden;border-radius:0;background:transparent !important;border:none !important;box-shadow:none !important;position:relative;min-height:0;min-width:0;width:100%;container-type:inline-size;container-name:chat-classroom;}.chat-card-frame{position:relative;display:flex;flex-direction:column;align-items:stretch;width:min( 96vw,var(--chat-card-max-width,820px),100% );max-width:100%;flex:1 1 0%;align-self:center;height:auto;max-height:100%;min-height:0;}.chat-card-frame > .chat-close-area{top:8px;right:8px;z-index:40;}.chat-messages-card{position:relative;flex:1 1 0%;display:flex;flex-direction:column;min-height:0;width:100%;height:100%;max-width:100%;max-height:100%;margin:0 auto;border-radius:var(--border-radius-lg);background:var(--chat-surface);border:2px solid var(--chat-ink-border);box-shadow:var(--shadow-lg);overflow:hidden;box-sizing:border-box;}.chat-messages-card::before{content:'';position:absolute;inset:0;background-image:url('/resources/img/backgrounds/bg-chat-night.png?v=5a9e1a39');background-repeat:repeat;background-size:auto;image-rendering:pixelated;opacity:0.04;pointer-events:none;z-index:0;}[data-theme="dark"] .chat-messages-card::before{opacity:0.07;}.chat-topbar{--chat-accent:#5BBD4A;display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-sm);background:var(--bg-secondary) !important;border:none;border-bottom:1px solid var(--border-color) !important;box-shadow:var(--shadow-md);flex-shrink:0;width:100%;box-sizing:border-box;}.chat-topbar-left{display:flex;align-items:center;gap:var(--spacing-xs);flex-wrap:wrap;flex:1 1 auto;min-width:0;}.chat-function-badge{padding:4px 12px;border-radius:var(--border-radius-round);font-weight:700;text-transform:capitalize;background-color:color-mix(in srgb,var(--chat-accent) 14%,transparent);color:var(--chat-accent);white-space:nowrap;}.chat-topbar-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--border-radius-round);font-size:0.72rem;font-weight:700;letter-spacing:0.3px;text-transform:capitalize;background:var(--chat-ink-soft);color:var(--text-secondary);border:1px solid 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10px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-weight:700;font-size:0.68rem;line-height:1.1;border-radius:999px;transition:color 0.15s ease;}.chat-mode-switch-opt img.act-icon{width:18px;height:18px;}.chat-mode-switch-opt.active{color:#fff;}.chat-mode-switch-opt:not(.active):hover{color:var(--text-primary);}.chat-toolbar-compose{flex:1 1 auto;display:flex;align-items:center;min-width:140px;min-height:48px;margin:0;background-color:var(--chat-compose-bg);border:1px solid var(--chat-ink-border);border-radius:14px;padding:4px 12px;transition:border-color 0.15s ease,box-shadow 0.15s ease;}.chat-toolbar-compose:focus-within{border-color:#2F6FED;box-shadow:0 0 0 2px color-mix(in srgb,#2F6FED 22%,transparent);}.chat-toolbar .cartoon-input-chat{flex:1 1 auto;width:100%;min-width:0;font-size:16px;background-color:transparent;border:none;box-shadow:none;padding:10px 4px;margin:0;color:var(--text-primary);}.chat-toolbar 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var(--chat-ink-border);background-color:var(--chat-compose-bg);color:var(--text-muted);cursor:pointer;display:flex;justify-content:center;align-items:center;font-size:14px;transition:var(--transition);}.chat-close-area:hover .chat-close-btn,.chat-close-area.active .chat-close-btn{background-color:var(--danger-color);border-color:var(--danger-color);color:#fff;transform:scale(1.1);box-shadow:0 2px 8px color-mix(in srgb,var(--danger-color) 40%,transparent);}.chat-close-btn:hover{background-color:var(--danger-color);}[data-theme="dark"] .chat-close-btn{background-color:var(--chat-compose-bg);border-color:var(--chat-ink-border);color:var(--text-muted);}[data-theme="dark"] .chat-close-area:hover .chat-close-btn,[data-theme="dark"] .chat-close-area.active .chat-close-btn{background-color:var(--danger-color);border-color:var(--danger-color);color:#fff;}@media (max-width:768px){.chat-classroom-root .chat-container{padding:var(--spacing-sm);}.chat-topbar{gap:6px;padding:8px 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i:first-child{flex-shrink:0;width:1em;text-align:center;}.feedback-short-encouragement{font-size:0.85em;font-style:italic;color:var(--text-muted);white-space:nowrap;margin-left:0;line-height:1;display:inline-flex;align-items:center;min-width:0;overflow:hidden;text-overflow:ellipsis;}.chat-feedback-evaluation-box:not(.expanded) .feedback-evaluation-header{border-bottom-width:0;border-radius:11px;background:transparent;}.feedback-evaluation-header i{font-size:1em;}.feedback-evaluation-header span{}.feedback-evaluation-content{display:flex;flex-direction:column;gap:8px;padding:0 12px;box-sizing:border-box;max-height:0;opacity:0;overflow:hidden;transition:max-height 0.4s ease-out,opacity 0.3s ease-out;}.chat-feedback-evaluation-box.expanded .feedback-evaluation-content{max-height:280px;opacity:1;overflow-y:auto;padding:8px 12px;}.feedback-evaluation-content::-webkit-scrollbar{width:4px;}.feedback-evaluation-content::-webkit-scrollbar-track{background:transparent;}.feedback-evaluation-content::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--success-color) 45%,transparent);border-radius:2px;}.feedback-section{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);padding:6px 10px;opacity:0;transform:translateY(8px);transition:opacity 0.3s ease,transform 0.3s ease;}.feedback-section.visible{opacity:1;transform:translateY(0);}.chat-feedback-evaluation-box.streaming .feedback-section:not(.visible){opacity:0;}.feedback-section-header{display:flex;align-items:center;gap:5px;font-size:0.85em;font-weight:600;color:var(--text-muted);margin-bottom:5px;}.feedback-section-header i{font-size:0.9em;}.feedback-translation-section{background:color-mix(in srgb,var(--text-secondary) 8%,transparent);}.feedback-translation-section .feedback-section-header{color:var(--text-secondary);}.feedback-error-check-section{background:color-mix(in srgb,var(--danger-color) 8%,transparent);}.feedback-error-check-section .feedback-section-header{color:var(--danger-color);}.feedback-vocab-suggestion-section{background:color-mix(in srgb,var(--vocabulary-color) 8%,transparent);}.feedback-vocab-suggestion-section .feedback-section-header{color:var(--vocabulary-color);}.vocab-suggestion-cards{display:flex;flex-wrap:nowrap;gap:8px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin;scrollbar-color:var(--vocabulary-color) transparent;}.vocab-suggestion-cards::-webkit-scrollbar{height:4px;}.vocab-suggestion-cards::-webkit-scrollbar-track{background:transparent;}.vocab-suggestion-cards::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--vocabulary-color) 45%,transparent);border-radius:2px;}.vocab-suggestion-card{display:flex;flex-direction:column;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);padding:10px 12px;width:150px;flex:0 0 150px;box-sizing:border-box;box-shadow:var(--shadow-sm);max-height:120px;overflow-y:auto;transition:background-color 0.15s ease,box-shadow 0.15s ease;}.vocab-suggestion-card:hover{background-color:var(--bg-primary);box-shadow:var(--shadow-md);}.vocab-suggestion-card::-webkit-scrollbar{width:4px;height:4px;}.vocab-suggestion-card::-webkit-scrollbar-track{background:transparent;}.vocab-suggestion-card::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--vocabulary-color) 45%,transparent);border-radius:2px;}.vocab-card-header{display:flex;align-items:center;gap:6px;margin-bottom:4px;}.vocab-word-main{font-weight:600;font-size:0.95em;color:var(--vocabulary-color);}.vocab-pos{font-size:0.7em;padding:1px 6px;border-radius:999px;font-style:italic;font-weight:600;}.vocab-pos.pos-noun{background:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.vocab-pos.pos-verb{background:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.vocab-pos.pos-adj{background:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.vocab-pos.pos-adv{background:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.vocab-pos.pos-prep{background:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color);}.vocab-pos.pos-other{background:var(--bg-tertiary);color:var(--text-secondary);}.vocab-phonetic{font-size:0.8em;color:var(--text-muted);font-style:italic;margin-bottom:2px;}.vocab-meaning-text{font-size:0.85em;color:var(--text-primary);line-height:1.3;}.feedback-grammar-suggestion-section{background:color-mix(in srgb,var(--grammar-color) 8%,transparent);}.feedback-grammar-suggestion-section .feedback-section-header{color:var(--grammar-color);}.grammar-suggestion-blocks{display:flex;flex-direction:row;flex-wrap:nowrap;gap:8px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin;scrollbar-color:var(--grammar-color) transparent;}.grammar-suggestion-blocks::-webkit-scrollbar{height:4px;}.grammar-suggestion-blocks::-webkit-scrollbar-track{background:transparent;}.grammar-suggestion-blocks::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--grammar-color) 45%,transparent);border-radius:2px;}.grammar-suggestion-block{display:flex;flex-direction:column;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);padding:10px 12px;width:150px;flex:0 0 150px;box-sizing:border-box;box-shadow:var(--shadow-sm);max-height:120px;overflow-y:auto;transition:background-color 0.15s ease,box-shadow 0.15s ease;}.grammar-suggestion-block:hover{background-color:var(--bg-primary);box-shadow:var(--shadow-md);}.grammar-suggestion-block::-webkit-scrollbar{width:4px;height:4px;}.grammar-suggestion-block::-webkit-scrollbar-track{background:transparent;}.grammar-suggestion-block::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--grammar-color) 45%,transparent);border-radius:2px;}.grammar-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:6px;margin-bottom:4px;}.grammar-pattern{font-weight:600;font-size:0.95em;color:var(--text-primary);margin-bottom:0;flex:1;}.grammar-meaning{font-size:0.85em;color:var(--text-primary);margin-bottom:3px;}.grammar-usage{font-size:0.8em;color:var(--text-muted);font-style:italic;line-height:1.4;}.feedback-comment-section{background:color-mix(in srgb,var(--warning-color) 9%,transparent);}.feedback-comment-section .feedback-section-header{color:var(--warning-color);}.feedback-suggested-sentences-section{background:color-mix(in srgb,var(--primary-color) 8%,transparent);overflow:visible;}.feedback-suggested-sentences-section .feedback-section-header{color:var(--primary-color);margin-bottom:8px;}.suggested-sentences-list{display:flex;flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin;scrollbar-color:var(--primary-color) transparent;flex-wrap:nowrap;min-width:0;}.suggested-sentences-list::-webkit-scrollbar{height:4px;}.suggested-sentences-list::-webkit-scrollbar-track{background:transparent;}.suggested-sentences-list::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--primary-color) 45%,transparent);border-radius:2px;}.suggested-sentence-item{display:flex;flex-direction:column;justify-content:flex-start;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);padding:10px 12px;font-size:0.9em;color:var(--text-primary);line-height:1.5;width:200px;flex:0 0 200px;box-sizing:border-box;gap:6px;box-shadow:var(--shadow-sm);max-height:120px;overflow-y:auto;transition:background-color 0.15s ease,box-shadow 0.15s ease;}.suggested-sentence-item:hover{background-color:var(--bg-primary);box-shadow:var(--shadow-md);}.suggested-sentence-item::-webkit-scrollbar{width:4px;height:4px;}.suggested-sentence-item::-webkit-scrollbar-track{background:transparent;}.suggested-sentence-item::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--primary-color) 45%,transparent);border-radius:2px;}.sentence-target{font-weight:600;color:var(--primary-color);margin-bottom:4px;}.sentence-native{font-size:0.9em;color:var(--text-muted);font-style:italic;}.sentence-header{display:flex;align-items:center;margin-bottom:4px;}.sentence-level{font-size:0.75em;font-weight:600;padding:2px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:0.5px;}.sentence-level.level-beginner{background:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.sentence-level.level-intermediate{background:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.sentence-level.level-advanced{background:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.skeleton-section{opacity:1 !important;transform:none !important;}.skeleton-section .section-content{min-height:20px;}.skeleton-text{display:block;height:16px;background:linear-gradient(90deg,color-mix(in srgb,var(--text-primary) 6%,transparent) 25%,color-mix(in srgb,var(--text-primary) 12%,transparent) 50%,color-mix(in srgb,var(--text-primary) 6%,transparent) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:4px;width:80%;}@keyframes shimmer{0%{background-position:200% 0;}100%{background-position:-200% 0;}}@media (max-width:768px),(hover:none) and (pointer:coarse){.skeleton-text{animation:none;background:color-mix(in srgb,var(--text-primary) 8%,transparent);background-size:auto;}}.section-streaming{opacity:1 !important;transform:none !important;}.section-streaming .section-content{min-height:20px;}.streaming-text{display:inline;line-height:1.5;color:var(--text-primary);}.typing-cursor{display:inline-block;width:2px;height:1em;background:var(--primary-color);animation:typing-blink 0.8s infinite;margin-left:2px;vertical-align:text-bottom;}@keyframes typing-blink{0%,50%{opacity:1;}51%,100%{opacity:0;}}.section-done{opacity:1 !important;transform:none !important;animation:section-complete 0.3s ease-out;}@keyframes section-complete{from{background-color:color-mix(in srgb,var(--success-color) 16%,transparent);}to{background-color:transparent;}}.feedback-score-badge{font-size:0.8em;padding:2px 8px;border-radius:999px;font-weight:600;background:transparent;}.feedback-score-badge.score-great{background:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.feedback-score-badge.score-good{background:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.feedback-score-badge.score-fair{background:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.feedback-score-badge.score-bad{background:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.feedback-score-badge.score-pending{background:var(--card-bg);color:var(--text-muted);min-width:60px;text-align:center;}.feedback-score-badge.score-pending i{font-size:0.9em;}.chat-feedback-evaluation-box.is-loading .feedback-section{opacity:1;transform:none;}.section-content{font-size:0.9em;line-height:1.5;color:var(--text-primary);}.content-feedback-text{font-size:0.9em;color:var(--text-primary);line-height:1.4;padding:4px 8px;}.chat-feedback-evaluation-box[data-feedback-type="ai"]{background:var(--suggestion-bg);border-color:var(--suggestion-border);}.chat-feedback-evaluation-box[data-feedback-type="ai"] .feedback-evaluation-header > .fa-wand-magic-sparkles{color:var(--info-color);}.chat-feedback-evaluation-box[data-feedback-type="ai"] .suggested-sentence-item{cursor:pointer;transition:background 0.15s ease,transform 0.1s ease,box-shadow 0.15s ease;}.chat-feedback-evaluation-box[data-feedback-type="ai"] .suggested-sentence-item:hover{background:var(--hover-bg);transform:translateY(-1px);box-shadow:var(--shadow-md);}.chat-feedback-evaluation-box[data-feedback-type="ai"] .suggested-sentence-item:active{transform:translateY(0);background:color-mix(in srgb,var(--primary-color) 16%,transparent);}[data-theme="dark"] .chat-feedback-evaluation-box[data-feedback-type="ai"] .suggested-sentence-item:hover{background:var(--hover-bg);}@media (max-width:480px){.chat-feedback-evaluation-box{max-width:calc(100% - 44px);width:auto;font-size:0.8em;padding:0;}.feedback-evaluation-header{margin:0;padding:0 10px;}.chat-feedback-evaluation-box:not(.expanded) .feedback-evaluation-header{margin:0;}.chat-feedback-evaluation-box.expanded .feedback-evaluation-content{padding-left:10px;padding-right:10px;}.vocab-suggestion-card{max-width:100%;flex:1 1 100%;}}[data-theme="dark"] .vocab-pos.pos-noun{background:color-mix(in srgb,var(--info-color) 18%,transparent);color:var(--info-color);}[data-theme="dark"] .vocab-pos.pos-verb{background:color-mix(in srgb,var(--success-color) 18%,transparent);color:var(--success-color);}[data-theme="dark"] .vocab-pos.pos-adj{background:color-mix(in srgb,var(--warning-color) 18%,transparent);color:var(--warning-color);}[data-theme="dark"] .vocab-pos.pos-adv{background:color-mix(in srgb,var(--danger-color) 18%,transparent);color:var(--danger-color);}[data-theme="dark"] .vocab-pos.pos-prep{background:color-mix(in srgb,var(--accent-color) 18%,transparent);color:var(--accent-color);}[data-theme="dark"] .vocab-pos.pos-other{background:var(--bg-tertiary);color:var(--text-secondary);}[data-theme="dark"] .skeleton-text{background:linear-gradient(90deg,color-mix(in srgb,var(--text-primary) 8%,transparent) 25%,color-mix(in srgb,var(--text-primary) 16%,transparent) 50%,color-mix(in srgb,var(--text-primary) 8%,transparent) 75%);background-size:200% 100%;}[data-theme="dark"] .feedback-section{background:var(--bg-tertiary);border:1px solid var(--border-color);}[data-theme="dark"] .typing-cursor{background:var(--primary-color);}[data-theme="dark"] .feedback-vocab-suggestion-section{background:color-mix(in srgb,var(--vocabulary-color) 16%,transparent) !important;border:1px solid color-mix(in srgb,var(--vocabulary-color) 32%,transparent);}[data-theme="dark"] .feedback-suggested-sentences-section{background:color-mix(in srgb,var(--primary-color) 14%,transparent) !important;border:1px solid color-mix(in srgb,var(--primary-color) 30%,transparent);}[data-theme="dark"] .feedback-grammar-suggestion-section{background:color-mix(in srgb,var(--grammar-color) 14%,transparent) !important;border:1px solid color-mix(in srgb,var(--grammar-color) 30%,transparent);}[data-theme="dark"] .feedback-translation-section{background:color-mix(in srgb,var(--text-secondary) 14%,transparent) !important;border:1px solid color-mix(in srgb,var(--text-secondary) 28%,transparent);}[data-theme="dark"] .feedback-error-check-section{background:color-mix(in srgb,var(--danger-color) 14%,transparent) !important;border:1px solid color-mix(in srgb,var(--danger-color) 30%,transparent);}[data-theme="dark"] .feedback-comment-section{background:color-mix(in srgb,var(--warning-color) 14%,transparent) !important;border:1px solid color-mix(in srgb,var(--warning-color) 30%,transparent);}[data-theme="dark"] .vocab-word-main{color:var(--vocabulary-color);}[data-theme="dark"] .vocab-meaning-text,[data-theme="dark"] .grammar-meaning{color:var(--text-primary);}[data-theme="dark"] .vocab-phonetic,[data-theme="dark"] .vocab-pos,[data-theme="dark"] .grammar-usage{color:var(--text-muted);}[data-theme="dark"] .vocab-suggestion-card{background:var(--bg-tertiary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);}[data-theme="dark"] .vocab-suggestion-card:hover,[data-theme="dark"] .grammar-suggestion-block:hover,[data-theme="dark"] .suggested-sentence-item:hover{background-color:color-mix(in srgb,var(--bg-tertiary) 88%,var(--text-primary) 12%);}[data-theme="dark"] .sentence-target{color:var(--primary-color);}[data-theme="dark"] .suggested-sentence-item{color:var(--text-primary);background:var(--bg-tertiary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);}[data-theme="dark"] .sentence-level.level-beginner{background:color-mix(in srgb,var(--success-color) 18%,transparent);color:var(--success-color);}[data-theme="dark"] .sentence-level.level-intermediate{background:color-mix(in srgb,var(--warning-color) 18%,transparent);color:var(--warning-color);}[data-theme="dark"] .sentence-level.level-advanced{background:color-mix(in srgb,var(--danger-color) 18%,transparent);color:var(--danger-color);}[data-theme="dark"] .ai-translation-text{color:var(--text-secondary);}[data-theme="dark"] .content-feedback-text{color:var(--text-primary);}[data-theme="dark"] .grammar-suggestion-block{background:var(--bg-tertiary);border:1px solid var(--border-color);}[data-theme="dark"] .grammar-pattern{color:var(--text-primary);}[data-theme="dark"] .feedback-translation-section .feedback-section-header{color:var(--text-secondary);}[data-theme="dark"] .feedback-error-check-section .feedback-section-header{color:var(--danger-color);}[data-theme="dark"] .feedback-vocab-suggestion-section .feedback-section-header{color:var(--vocabulary-color);}[data-theme="dark"] .feedback-grammar-suggestion-section .feedback-section-header{color:var(--grammar-color);}[data-theme="dark"] .feedback-comment-section .feedback-section-header{color:var(--warning-color);}[data-theme="dark"] .feedback-suggested-sentences-section .feedback-section-header{color:var(--primary-color);}.chat-feedback-trigger{display:flex;align-items:flex-start;gap:8px;margin:2px 0 6px;width:100%;}.chat-feedback-trigger--user{justify-content:flex-end;padding-right:calc(36px + 10px + 4px);}.chat-feedback-trigger--ai{justify-content:flex-start;padding-left:calc(36px + 10px + 4px);}.feedback-trigger-btn{display:inline-flex;align-items:center;justify-content:center;align-self:flex-start;width:36px;height:36px;flex-shrink:0;padding:0;border:1px solid color-mix(in srgb,var(--warning-color) 45%,transparent);border-radius:50%;background:color-mix(in srgb,var(--warning-color) 12%,transparent);color:var(--warning-color);cursor:pointer;transition:var(--transition-fast);}.feedback-trigger-btn:hover{background:color-mix(in srgb,var(--warning-color) 18%,transparent);color:var(--warning-color);border-color:var(--warning-color);}.feedback-trigger-btn.is-lit{background:color-mix(in srgb,var(--warning-color) 18%,transparent);color:var(--warning-color);border-color:color-mix(in srgb,var(--warning-color) 55%,transparent);box-shadow:0 0 10px color-mix(in srgb,var(--warning-color) 45%,transparent);}.chat-feedback-trigger[data-state="loading"] .feedback-trigger-btn{cursor:default;pointer-events:none;}.chat-feedback-trigger[data-state="loading"] .feedback-trigger-btn i{animation:feedback-bulb-blink 0.9s ease-in-out infinite;}@keyframes feedback-bulb-blink{0%,100%{color:var(--warning-color);opacity:0.35;text-shadow:none;}50%{color:var(--warning-color);opacity:1;text-shadow:0 0 6px color-mix(in srgb,var(--warning-color) 75%,transparent);}}[data-theme="dark"] .feedback-trigger-btn{background:color-mix(in srgb,var(--warning-color) 14%,transparent);border-color:color-mix(in srgb,var(--warning-color) 40%,transparent);color:var(--warning-color);}[data-theme="dark"] .feedback-trigger-btn.is-lit{background:color-mix(in srgb,var(--warning-color) 20%,transparent);color:var(--warning-color);border-color:color-mix(in srgb,var(--warning-color) 55%,transparent);box-shadow:0 0 10px color-mix(in srgb,var(--warning-color) 45%,transparent);}.modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.7);backdrop-filter:none;-webkit-backdrop-filter:none;z-index:var(--z-modal);animation:fadeIn 0.25s ease;}.modal.active{display:flex;align-items:center;justify-content:center;}.modal-content{background:var(--bg-secondary);border-radius:var(--border-radius-lg);max-width:600px;width:90%;max-height:calc(var(--app-height) * 0.85);display:flex;flex-direction:column;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);animation:modalFadeScale 0.2s var(--ease-out);overflow:hidden;}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 25px;background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);}.modal-header h3{margin:0;color:var(--text-primary);font-size:1.4em;}.cartoon-close-btn{background:transparent;border:none;font-size:20px;cursor:pointer;color:var(--text-muted);width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition-fast);}.cartoon-close-btn:hover{background-color:var(--bg-tertiary);color:var(--text-primary);}.modal-body{padding:25px;overflow-y:auto;flex:1;}@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}@keyframes modalFadeScale{from{transform:scale(0.96);opacity:0;}to{transform:scale(1);opacity:1;}}@media 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.btn-close-icon{width:18px;height:18px;}.teaching-load-icon{display:flex;justify-content:center;align-items:center;margin-bottom:var(--spacing-sm);min-height:40px;}.teaching-load-spinner{--waiting-size:36px;--waiting-border-width:3px;width:var(--waiting-size);height:var(--waiting-size);border-radius:50%;border:var(--waiting-border-width) solid color-mix(in srgb,var(--primary-color) 22%,transparent);border-top-color:var(--primary-color);animation:teachingLoadSpin 0.75s linear infinite;box-sizing:border-box;}.waiting-indicator{--waiting-size:1em;--waiting-border-width:2px;display:inline-block;vertical-align:middle;}@keyframes teachingLoadSpin{to{transform:rotate(360deg);}}.teaching-load-title{margin:0 0 var(--spacing-xs);font-size:1.05rem;color:var(--text-primary);}.teaching-load-msg{color:var(--text-secondary);margin:0 0 var(--spacing-md);font-size:0.88rem;word-break:break-word;min-height:1.2em;}.teaching-load-progress{display:flex;align-items:center;gap:10px;margin-top:4px;}.teaching-load-progress-track{flex:1 1 auto;height:14px;border-radius:var(--border-radius-round);background:var(--bg-tertiary);overflow:hidden;border:1px solid var(--border-color);}.teaching-load-progress-fill{width:100%;height:100%;transform-origin:left center;transform:scaleX(0);border-radius:inherit;background:linear-gradient(90deg,var(--primary-color),var(--info-color));transition:transform 0.25s ease;}.teaching-load-progress-text{flex:0 0 auto;min-width:2.6em;font-size:0.8rem;font-weight:700;color:var(--primary-color);text-align:right;}.teaching-load-actions{display:flex;gap:var(--spacing-sm);justify-content:center;margin-top:var(--spacing-sm);}@media 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.teaching-act-resume.btn-continue{flex:1;justify-content:center;}.chat-session-actions .teaching-act-delete{flex:1;min-width:0;}.chat-session-card .teaching-act-score{background:var(--warning-color);color:#FFFFFF;border:1px solid var(--warning-color);}.chat-session-card .teaching-act-score:hover:not(:disabled){background:color-mix(in srgb,var(--warning-color) 85%,#000);border-color:color-mix(in srgb,var(--warning-color) 85%,#000);color:#FFFFFF;transform:translateY(-1.5px);box-shadow:var(--shadow-md);}.chat-session-card .teaching-act-score.is-scoring{cursor:wait;}.chat-session-score-badge{flex-shrink:0;min-width:36px;height:28px;padding:0 8px;border:none;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;font-size:0.78rem;font-weight:700;font-family:inherit;color:#FFFFFF;line-height:1;margin-left:8px;cursor:pointer;}.chat-session-score-badge:hover{filter:brightness(1.08);}.chat-session-score-badge:focus-visible{outline:2px solid color-mix(in srgb,#ffffff 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auto;font-size:0.92rem;font-weight:800;color:var(--text-primary);}.chat-score-report-section-body{margin-top:10px;display:flex;flex-direction:column;gap:12px;}.chat-score-report-points{flex:0 0 auto;font-size:0.98rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text-primary);}.chat-score-report-bucket{display:flex;flex-direction:column;gap:8px;}.chat-score-report-bucket-title{margin:0;display:flex;align-items:baseline;justify-content:space-between;gap:8px;font-size:0.78rem;font-weight:800;letter-spacing:0.03em;text-transform:uppercase;color:var(--text-secondary);}.chat-score-report-bucket--correct .chat-score-report-bucket-title{color:#1f8a4c;}.chat-score-report-bucket--wrong .chat-score-report-bucket-title{color:#c4453c;}.chat-score-report-count{flex:0 0 auto;min-width:1.5em;padding:1px 7px;border-radius:999px;background:color-mix(in srgb,var(--bg-secondary) 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var(--border-color);width:100%;min-width:0;overflow:hidden;}.prompt-tabs{display:flex;gap:4px;flex-wrap:nowrap;min-width:0;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;background-color:var(--bg-tertiary);border-radius:var(--border-radius-md);padding:4px;}.prompt-filter-controls{display:flex;align-items:center;gap:10px;flex-shrink:0;min-width:0;max-width:100%;}.prompt-sort-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;padding:9px 34px 9px 14px;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);background-color:var(--bg-tertiary);color:var(--text-primary);font-size:13px;font-weight:500;cursor:pointer;transition:var(--transition-fast);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238B8D94' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 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.prompt-template-card{--list-card-bg:var(--card-vocab-bg);--list-card-border:var(--card-vocab-border);--list-card-header-bg:var(--card-vocab-header-bg);}.prompt-template-row.teaching-series-lessons{--teaching-lesson-cols:5;scroll-snap-type:none;}@media (max-width:1440px){.prompt-template-row.teaching-series-lessons{--teaching-lesson-cols:4;}}@media (max-width:1100px){.prompt-template-row.teaching-series-lessons{--teaching-lesson-cols:3;}}@media (max-width:768px){.prompt-template-row.teaching-series-lessons{--teaching-lesson-cols:2;}}@media (max-width:480px){.prompt-template-row.teaching-series-lessons{--teaching-lesson-cols:1;}}.prompt-template-row.teaching-series-lessons .prompt-template-card{flex:0 0 calc((100% - (var(--teaching-lesson-cols) - 1) * var(--teaching-lesson-gap)) / var(--teaching-lesson-cols));width:calc((100% - (var(--teaching-lesson-cols) - 1) * var(--teaching-lesson-gap)) / var(--teaching-lesson-cols));min-width:calc((100% - (var(--teaching-lesson-cols) - 1) * var(--teaching-lesson-gap)) / var(--teaching-lesson-cols));max-width:calc((100% - (var(--teaching-lesson-cols) - 1) * var(--teaching-lesson-gap)) / var(--teaching-lesson-cols));height:320px;margin-bottom:0;scroll-snap-align:none;cursor:pointer;display:flex;flex-direction:column;overflow:hidden;}@keyframes promptTitleMarquee{0%,20%{transform:translateX(0);}80%,100%{transform:translateX(calc(-1 * var(--marquee-distance,0px)));}}.prompt-template-card-header{flex-shrink:0;gap:var(--spacing-sm);padding:10px 14px;}.prompt-template-card-header .session-title{min-width:0;font-size:15px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;position:relative;}.prompt-template-card-title.is-overflowing{text-overflow:clip;}.prompt-template-title-inner{display:inline-block;white-space:nowrap;}.prompt-template-card-title.is-overflowing .prompt-template-title-inner{will-change:transform;animation:promptTitleMarquee var(--marquee-duration,4s) ease-in-out infinite alternate;}.prompt-template-seq{flex-shrink:0;padding:4px 10px;border-radius:var(--border-radius-round);font-size:0.75rem;font-weight:700;letter-spacing:0.4px;background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--primary-color) 12%,transparent);color:var(--primary-color);}.prompt-template-card .prompt-template-card-body{display:flex;flex-direction:column;flex:1;min-height:0;padding:4px 12px;margin:0;gap:0;grid-template-columns:none;overflow:hidden;}.prompt-template-preview{flex:1;min-height:0;width:100%;height:100%;box-sizing:border-box;margin:0;padding:8px 10px;overflow-x:hidden;overflow-y:auto;overscroll-behavior:auto;touch-action:pan-x pan-y;white-space:pre-wrap;word-break:break-word;font-family:'Monaco','Consolas',monospace;font-size:0.72em;line-height:1.4;color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);}.prompt-template-card-actions{flex-shrink:0;display:grid;grid-template-columns:1fr 1fr;gap:8px;justify-content:stretch;padding:8px 12px 10px;margin:0;}.prompt-template-card-actions .action-btn{width:100%;min-width:0;min-height:40px;flex:none;justify-content:center;}.prompt-template-card-actions .btn-delete{width:100%;display:inline-flex;align-items:center;gap:6px;}.prompt-template-card-actions img.act-icon{width:18px;height:18px;flex-shrink:0;}.prompt-editor-title{font-weight:bold;font-size:16px;color:var(--text-primary);}.prompt-editor-header{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;background:var(--bg-primary);border-bottom:1px solid var(--border-color);}.prompt-editor-title-wrap{display:flex;align-items:center;gap:10px;}.prompt-editor-header-icon{font-size:18px;color:var(--primary-color);}.prompt-editor-close{width:30px;height:30px;border:none;background-color:transparent;color:var(--text-muted);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition-fast);}.prompt-editor-close:hover{background-color:var(--bg-tertiary);color:var(--text-primary);}.prompt-actions{display:flex;justify-content:space-between;align-items:center;flex-shrink:0;margin-top:14px;padding-top:14px;border-top:1px solid var(--border-color);}.prompt-actions-left{display:flex;align-items:center;gap:10px;}.prompt-actions-right{display:flex;align-items:center;}.prompt-info-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--border-radius-round);font-size:12px;color:var(--text-secondary);font-weight:500;}.prompt-info-badge strong{color:var(--text-primary);font-weight:700;}#prompt-info{font-size:12px;color:var(--text-secondary);}#prompt-editor-modal{backdrop-filter:none;-webkit-backdrop-filter:none;}#prompt-editor-modal .modal-content.prompt-editor-modal-content,.prompt-editor-modal-content{max-width:1080px;width:95%;height:calc(var(--app-height) * 0.86);max-height:calc(var(--app-height) * 0.92);min-height:580px;display:flex;flex-direction:column;overflow:hidden;background:var(--card-bg);border:2px solid var(--border-strong);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-xl);}#prompt-editor-modal .modal-header{background:var(--bg-primary);border-bottom:1px solid var(--border-color);}#prompt-editor-modal .modal-body.prompt-editor-modal-body,#prompt-editor-modal .modal-body{overflow:hidden;flex:1;min-height:0;display:flex;flex-direction:column;padding:16px 20px 18px;background:var(--card-bg);}.prompt-editor-main{display:flex;gap:16px;flex:1;min-height:0;margin:0;}.prompt-editor-left{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column;gap:12px;}.prompt-editor-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 14px;margin-bottom:0;padding:12px 14px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--border-radius-md);flex-shrink:0;}.prompt-field-row{display:flex;flex-direction:column;gap:5px;}.prompt-field-row label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-secondary);padding-left:2px;margin:0;display:flex;align-items:center;gap:6px;}.prompt-field-row label i{font-size:11px;color:var(--primary-color);opacity:0.85;}.prompt-editor-fields .cartoon-input,.prompt-editor-fields .cartoon-select{width:100%;height:34px;padding:5px 10px;font-size:13px;font-family:var(--font-primary);color:var(--text-primary);background-color:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-xs);box-sizing:border-box;line-height:normal;outline:none;transition:var(--transition-fast);}.prompt-editor-fields .cartoon-input:hover,.prompt-editor-fields .cartoon-select:hover{border-color:var(--border-strong);}.prompt-editor-fields .cartoon-input:focus,.prompt-editor-fields .cartoon-select:focus{background-color:var(--card-bg);border-color:var(--primary-color);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary-color) 20%,transparent);}.prompt-editor-canvas{flex:1;min-height:0;display:flex;flex-direction:column;border:1px solid var(--border-color);border-radius:var(--border-radius-md);background:var(--bg-primary);overflow:hidden;transition:border-color 0.2s ease,box-shadow 0.2s ease;}.prompt-editor-canvas:focus-within{border-color:var(--primary-color);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary-color) 20%,transparent);}.prompt-canvas-header{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);font-size:11px;flex-shrink:0;}.prompt-canvas-title{font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-secondary);display:flex;align-items:center;gap:6px;}.prompt-canvas-title i{color:var(--primary-color);}.prompt-canvas-hint{color:var(--text-muted);font-size:11px;}.prompt-canvas-hint code{background:var(--card-bg);padding:1px 5px;border-radius:3px;border:1px solid var(--border-color);font-family:'SF Mono','Monaco','Consolas',monospace;color:var(--primary-color);}#system-prompt-editor{flex:1;min-height:0;width:100%;height:100% !important;resize:none;overflow-y:auto;white-space:pre-wrap;word-wrap:break-word;padding:14px 16px;font-family:'SF Mono','Monaco','Consolas','Courier 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var(--border-color);display:flex;align-items:center;justify-content:space-between;}.prompt-var-panel-title-text{display:flex;align-items:center;gap:6px;}.prompt-var-panel-title-text i{color:var(--primary-color);}.prompt-var-search-wrapper{position:relative;padding:8px 10px;background:var(--bg-primary);border-bottom:1px solid var(--border-color);flex-shrink:0;}.prompt-var-search-icon{position:absolute;left:20px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--text-muted);pointer-events:none;}.prompt-variables-panel .prompt-var-search{width:100%;height:30px;margin:0;padding:4px 10px 4px 28px;flex-shrink:0;font-size:12px;background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-xs);box-shadow:none;box-sizing:border-box;color:var(--text-primary);outline:none;transition:var(--transition-fast);}.prompt-variables-panel .prompt-var-search:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary-color) 20%,transparent);}.prompt-variables-list{display:flex;flex-direction:column;flex-wrap:nowrap;gap:6px;overflow-y:auto;flex:1 1 0;min-height:0;padding:10px 10px;background:var(--bg-primary);}.prompt-var-tag{background:var(--card-bg);padding:6px 10px;border-radius:var(--border-radius-xs);border:1px solid var(--border-color);color:var(--primary-color);font-family:'SF Mono','Monaco','Consolas',monospace;font-size:11.5px;font-weight:600;cursor:grab;user-select:none;transition:var(--transition-fast);display:flex;align-items:center;justify-content:space-between;box-shadow:0 1px 2px rgba(0,0,0,0.02);}.prompt-var-tag:hover{background:color-mix(in srgb,var(--primary-color) 8%,var(--card-bg));border-color:var(--primary-color);transform:translateX(2px);color:var(--primary-hover);}.prompt-var-tag:active{cursor:grabbing;}.prompt-var-tag.is-selected{background:var(--primary-color);color:#ffffff;border-color:var(--primary-color);box-shadow:0 2px 6px color-mix(in srgb,var(--primary-color) 30%,transparent);}.prompt-var-tag.prompt-var-empty{color:var(--text-muted);font-style:italic;cursor:default;justify-content:center;}.prompt-var-detail{flex:0 0 44%;min-height:0;margin:0;padding:12px 14px;overflow-y:auto;font-size:12px;line-height:1.5;color:var(--text-primary);background:var(--bg-secondary);border:none;border-top:1px solid var(--border-color);border-radius:0;display:flex;flex-direction:column;gap:8px;box-sizing:border-box;}.prompt-var-detail-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center;gap:8px;padding:16px 8px;font-size:11.5px;}.prompt-var-detail-empty i{font-size:20px;color:var(--text-muted);opacity:0.6;}.prompt-var-detail-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-bottom:6px;border-bottom:1px solid var(--border-color);}.prompt-var-badge{font-family:'SF 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var(--border-color);font-size:11.5px;}.prompt-var-example-code{margin:2px 0 0;padding:8px 10px;background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-xs);font-family:'SF Mono','Monaco','Consolas',monospace;font-size:11px;line-height:1.45;color:var(--text-primary);white-space:pre-wrap;word-break:break-word;overflow-x:auto;}.prompt-var-no-desc{color:var(--text-muted);font-style:italic;font-size:11.5px;padding:8px 0;}[data-theme="dark"] .prompt-var-tag{background:var(--card-bg);color:var(--primary-color);border-color:var(--border-color);}[data-theme="dark"] .prompt-var-tag.is-selected{background:var(--primary-color);color:#ffffff;}[data-theme="dark"] .prompt-var-detail{background:var(--bg-secondary);border-color:var(--border-color);}.service-states-float{position:fixed;top:80px;right:20px;width:380px;max-height:80vh;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg);z-index:var(--z-overlay);display:none;flex-direction:column;overflow:hidden;font-family:inherit;}.service-states-float.active{display:flex;}.service-states-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--gradient-primary);color:white;border-radius:calc(var(--border-radius-lg) - 1px) calc(var(--border-radius-lg) - 1px) 0 0;cursor:grab;user-select:none;}.service-states-header h4{margin:0;font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;}.service-states-close{background:color-mix(in srgb,#ffffff 20%,transparent);border:none;color:white;width:28px;height:28px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background 0.2s;}.service-states-close:hover{background:color-mix(in srgb,#ffffff 35%,transparent);}.service-states-header-actions{display:flex;align-items:center;gap:6px;}.service-states-action-btn{background:color-mix(in srgb,#ffffff 20%,transparent);border:none;color:white;width:28px;height:28px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background 0.2s,transform 0.2s;font-size:12px;}.service-states-action-btn:hover{background:color-mix(in srgb,#ffffff 35%,transparent);}.service-states-action-btn:active{transform:scale(0.9);}.service-states-float.collapsed .service-states-content{display:none;}.service-states-float.collapsed{max-height:none;}.service-states-float.collapsed #service-states-collapse i{transform:rotate(180deg);}.service-states-card.collapsed .service-states-grid,.service-states-card.collapsed .ss-user-list{display:none;}.service-states-card.collapsed{padding-bottom:8px;}.service-states-card-summary{display:none;gap:12px;padding:8px 0 0 0;margin-top:4px;}.service-states-card.collapsed .service-states-card-summary{display:flex;}.ss-summary-item{display:flex;align-items:center;gap:4px;font-size:12px;}.ss-summary-label{color:var(--text-muted);font-weight:500;}.ss-summary-value{color:var(--text-primary);font-weight:600;}.service-states-card-header{display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none;}.service-states-card-toggle{background:none;border:none;color:inherit;cursor:pointer;font-size:12px;padding:2px 6px;opacity:0.6;transition:opacity 0.2s,transform 0.2s;}.service-states-card-toggle:hover{opacity:1;}.service-states-card.collapsed .service-states-card-toggle{transform:rotate(180deg);}.service-states-content{padding:12px;overflow-y:auto;flex:1;}.service-states-timestamp{text-align:right;font-size:11px;color:var(--text-muted);margin-bottom:8px;padding-right:4px;}.service-states-card{background:var(--bg-tertiary);border-radius:var(--border-radius-md);padding:12px;margin-bottom:10px;border:1px solid var(--border-color);}.service-states-card h4{margin:0 0 10px 0;font-size:14px;font-weight:600;display:flex;align-items:center;gap:6px;}.service-states-card.openai-card h4{color:#10a37f;}.service-states-card.minimax-card h4{color:#4a90d9;}.ss-chat-backend{margin-bottom:12px;padding:10px 12px;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);background:var(--card-bg);}.ss-chat-backend-title{font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:8px;}.ss-chat-backend-toggle{display:flex;gap:8px;}.ss-chat-backend-btn{flex:1;min-height:36px;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;font-weight:600;}.ss-chat-backend-btn.is-active{border-color:var(--primary-color);background:var(--primary-color);color:var(--text-inverted);}.ss-chat-backend-hint{margin:8px 0 0;font-size:11px;color:var(--text-muted);}.service-states-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;}.service-states-item{display:flex;flex-direction:column;background:var(--card-bg);padding:8px 10px;border-radius:var(--border-radius-sm);border:1px solid var(--border-color);}.service-states-item .label{font-size:11px;color:var(--text-muted);margin-bottom:2px;}.service-states-item .value{font-size:13px;font-weight:600;color:var(--text-primary);}.service-states-item .value.warning{color:var(--danger-color);}@media (max-width:480px){.service-states-float{width:calc(100vw - 20px);right:10px;left:10px;}}.ss-user-list{margin-top:10px;border-top:1px dashed var(--border-color);padding-top:8px;}.ss-user-list-title{font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:6px;display:flex;align-items:center;gap:4px;}.ss-user-row{display:flex;align-items:center;gap:8px;padding:5px 8px;background:var(--card-bg);border-radius:6px;margin-bottom:4px;border:1px solid var(--border-color);font-size:12px;}.ss-user-rank{width:18px;height:18px;display:flex;align-items:center;justify-content:center;background:var(--primary-color);color:white;border-radius:50%;font-size:10px;font-weight:700;flex-shrink:0;}.ss-user-row:nth-child(2) .ss-user-rank{background:var(--success-color);}.ss-user-row:nth-child(3) .ss-user-rank{background:var(--warning-color);}.ss-user-row:nth-child(4) .ss-user-rank{background:var(--text-muted);}.ss-user-row:nth-child(5) .ss-user-rank{background:var(--accent-color);}.ss-user-id{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500;color:var(--text-primary);}.ss-user-rpm{color:var(--danger-color);font-weight:600;white-space:nowrap;}.ss-user-tokens{color:var(--text-muted);white-space:nowrap;}.ss-queue-badge{background-color:rgba(240,178,50,0.12);background-color:color-mix(in srgb,var(--warning-color) 12%,transparent);color:var(--warning-color);padding:1px 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16px;}#teaching-list-refresh:hover,#chat-list-refresh:hover,#review-papers-refresh:hover{background-color:var(--primary-hover);color:#fff;border-color:var(--primary-hover);box-shadow:var(--shadow-sm);}.sidebar-close-btn{position:absolute;top:10px;right:10px;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);font-size:1.2rem;width:32px;height:32px;border-radius:50%;display:none;align-items:center;justify-content:center;cursor:pointer;z-index:1002;box-shadow:var(--shadow-sm);flex-shrink:0;}@media (max-width:768px){:root{--sidebar-width:0px;--header-height:60px;}.zone-rail{display:none;}.zone-section{display:flex !important;}.zone-title{margin-top:8px;}.sidebar-close-btn{display:flex;position:sticky;top:0;align-self:flex-end;margin-left:auto;margin-bottom:4px;flex-shrink:0;}.sidebar:not(.collapsed) ~ 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var(--border-color);}.summary-example-header{font-size:0.7rem;font-weight:800;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted);margin-bottom:6px;}.summary-example-list{display:flex;flex-direction:column;gap:8px;}.summary-example-item{font-size:0.78rem;line-height:1.4;}.summary-example-main{color:var(--text-primary);font-weight:600;word-break:break-word;}.summary-example-main i{color:var(--text-muted);margin-right:4px;font-size:0.75rem;}.summary-example-trans{color:var(--text-secondary);font-style:italic;font-size:0.74rem;margin-top:2px;word-break:break-word;padding-left:14px;}html:not([data-theme="dark"]) .teaching-lesson-summary-tile{background:#FFFFFF;}[data-theme="dark"] .teaching-lesson-summary-tile{box-shadow:0 4px 14px rgba(0,0,0,0.28);}@media (max-width:480px){.teaching-lesson-summary-tile{flex-basis:min(200px,84%);width:min(200px,84%);min-width:min(200px,84%);height:300px;}.teaching-lesson-summary-tile-visual{flex-basis:118px;height:118px;}.teaching-lesson-summary-tile-type-icon{width:56px;height:56px;}}.teaching-card.is-active{box-shadow:0 0 0 3px rgba(255,122,89,0.45),var(--shadow-lg);box-shadow:0 0 0 3px color-mix(in srgb,var(--secondary-color) 45%,transparent),var(--shadow-lg);}.teaching-card.has-error{box-shadow:0 0 0 3px rgba(239,68,68,0.45),var(--shadow-lg);box-shadow:0 0 0 3px color-mix(in srgb,var(--danger-color) 45%,transparent),var(--shadow-lg);}.teaching-card-badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:var(--spacing-sm);}.teaching-badge{display:inline-block;font-size:0.75rem;padding:4px 10px;border-radius:999px;background-color:rgba(139,92,246,0.12);background-color:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color);margin-bottom:0;font-weight:600;letter-spacing:0.3px;}.teaching-difficulty-badge{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:0.72rem;font-weight:600;letter-spacing:0.4px;text-transform:uppercase;}.teaching-difficulty-badge--beginner{background-color:rgba(16,185,129,0.12);background-color:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.teaching-difficulty-badge--intermediate{background-color:rgba(245,158,11,0.14);background-color:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.teaching-difficulty-badge--advanced{background-color:rgba(239,68,68,0.12);background-color:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.teaching-badge--practice{background-color:rgba(59,130,246,0.12);background-color:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.teaching-badge--vocabulary{background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--vocabulary-color) 12%,transparent);color:var(--vocabulary-color);}.teaching-badge--grammar{background-color:rgba(20,184,166,0.12);background-color:color-mix(in srgb,var(--grammar-color) 12%,transparent);color:var(--grammar-color);}.teaching-badge--slang{background-color:rgba(245,158,11,0.14);background-color:color-mix(in srgb,var(--subject-slang) 14%,transparent);color:var(--subject-slang);}.teaching-card-title{margin:0 0 var(--spacing-xs);font-family:var(--font-heading);color:var(--text-primary);}.teaching-card-title-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:var(--spacing-sm);margin-bottom:var(--spacing-xs);}.teaching-card-title-row .teaching-card-title{margin-bottom:0;}.teaching-title-play{flex-shrink:0;padding:8px 12px;font-size:0.86rem;line-height:1;}.teaching-card--vocabulary .teaching-card-title{font-size:clamp(2.4rem,6.5vw,3.8rem);font-weight:800;line-height:1.1;letter-spacing:0.5px;overflow-wrap:anywhere;word-break:break-word;}.teaching-card--grammar .teaching-card-title{font-size:clamp(1.8rem,5vw,2.6rem);font-weight:700;line-height:1.15;letter-spacing:0.5px;overflow-wrap:anywhere;word-break:break-word;}.teaching-card--slang .teaching-card-title{font-size:clamp(2.0rem,5.5vw,3.2rem);font-weight:800;line-height:1.1;letter-spacing:0.5px;overflow-wrap:anywhere;word-break:break-word;}.teaching-card-layout{display:grid;grid-template-columns:minmax(0,1fr) clamp(112px,30vw,176px);grid-template-areas:"intro aside" "body body";column-gap:var(--spacing-md);row-gap:var(--spacing-sm);align-items:start;margin-top:2px;}.teaching-card-intro{grid-area:intro;min-width:0;width:100%;}.teaching-card-aside{grid-area:aside;min-width:0;justify-self:end;width:100%;max-width:176px;}.teaching-card-layout > .teaching-card-body{grid-area:body;min-width:0;margin-top:0;padding-top:0;}.teaching-card-layout > .teaching-card-body > .teaching-card-section:first-child{margin-top:0;}.teaching-card-layout .teaching-card-body{display:flex;flex-direction:column;align-items:stretch;width:100%;}.teaching-card-layout .teaching-card-section{display:flex;flex-direction:column;align-items:stretch;width:100%;max-width:100%;margin-left:0;margin-right:0;padding-left:0;padding-right:0;box-sizing:border-box;}.teaching-card-layout .teaching-section-label{align-self:flex-start;margin-left:0;}.teaching-card-layout .teaching-card-section--definition .teaching-def p,.teaching-card-layout .teaching-card-section--definition > p,.teaching-card-layout .teaching-card-section--definition .teaching-sense-row{width:100%;max-width:100%;box-sizing:border-box;margin-left:0;margin-right:0;}.teaching-card-layout .teaching-examples{width:100%;max-width:100%;padding-left:0;margin-left:0;list-style:none;}.teaching-card-layout .teaching-card-section--examples .teaching-examples li{width:100%;max-width:100%;box-sizing:border-box;list-style:none;margin-left:0;}.teaching-card-layout .teaching-card-section--examples .teaching-examples li::before{content:'•';margin-right:8px;color:var(--info-color);font-weight:800;}.teaching-card-layout .teaching-chip-list{width:100%;max-width:100%;margin-left:0;justify-content:flex-start;}.teaching-card-head{margin-bottom:2px;}.teaching-card-sub.teaching-word-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--spacing-xs);}.teaching-meta-chip,.teaching-info-chip{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:var(--border-radius-sm);font-size:0.8rem;font-weight:700;line-height:1.2;backdrop-filter:none;-webkit-backdrop-filter:none;}.teaching-meta-chip{background:var(--bg-tertiary);color:var(--text-secondary);}.teaching-meta-chip--phonetic{font-family:var(--font-mono,ui-monospace,monospace);font-weight:600;color:var(--text-secondary);background:var(--bg-tertiary);}.teaching-meta-chip--pos{text-transform:lowercase;font-weight:700;color:var(--vocabulary-color);background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--vocabulary-color) 12%,transparent);}.teaching-meta-chip--category,.teaching-meta-chip--region,.teaching-meta-chip--formality{color:var(--text-secondary);background:var(--bg-tertiary);}.teaching-info-chip{background:var(--bg-tertiary);color:var(--text-secondary);}.teaching-info-chip--synonym{background-color:rgba(20,184,166,0.12);background-color:color-mix(in srgb,var(--grammar-color) 12%,transparent);color:var(--grammar-color);}.teaching-info-chip--antonym{background-color:rgba(239,68,68,0.12);background-color:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.teaching-info-chip--tag{background-color:rgba(245,158,11,0.14);background-color:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.teaching-meta-chip--attr{text-transform:lowercase;font-weight:700;color:var(--warning-color);background-color:rgba(245,158,11,0.14);background-color:color-mix(in srgb,var(--warning-color) 14%,transparent);}.teaching-info-chip--collocation{background-color:rgba(16,185,129,0.12);background-color:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.teaching-info-chip--form{background-color:rgba(59,130,246,0.12);background-color:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.teaching-info-chip--related{background-color:rgba(139,92,246,0.12);background-color:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color);}.teaching-related-pos{margin-left:6px;font-size:0.82em;font-style:italic;opacity:0.72;}.teaching-sense-pos{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:6px;}.teaching-sense-pos .teaching-meta-chip--pos{margin-bottom:0;}.teaching-collocations .teaching-collocation-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;}.teaching-collocations .teaching-collocation-row:last-child{margin-bottom:0;}.teaching-forms .teaching-form-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;}.teaching-forms .teaching-form-row:last-child{margin-bottom:0;}.teaching-collocations-body{padding:10px 12px;border-radius:var(--border-radius-md);background-color:rgba(16,185,129,0.08);background-color:color-mix(in srgb,var(--success-color) 8%,transparent);border:1px solid rgba(16,185,129,0.22);border:1px solid color-mix(in srgb,var(--success-color) 22%,transparent);}.teaching-section-label--collocation{background-color:rgba(16,185,129,0.12);background-color:color-mix(in srgb,var(--success-color) 12%,transparent);color:var(--success-color);}.teaching-forms-body{padding:10px 12px;border-radius:var(--border-radius-md);background-color:rgba(59,130,246,0.08);background-color:color-mix(in srgb,var(--info-color) 8%,transparent);border:1px solid rgba(59,130,246,0.22);border:1px solid color-mix(in srgb,var(--info-color) 22%,transparent);}.teaching-section-label--form{background-color:rgba(59,130,246,0.12);background-color:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.teaching-section-label--related{background-color:rgba(139,92,246,0.12);background-color:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color);}.teaching-senses{display:flex;flex-direction:column;gap:10px;}.teaching-sense-row{padding:10px 12px;border-radius:var(--border-radius-md,12px);background:var(--bg-tertiary);border:1px solid var(--border-color);}.teaching-sense-row .teaching-meta-chip--pos{margin-bottom:6px;}.teaching-sense-def{margin:0;color:var(--text-primary);font-weight:700;line-height:1.55;}.teaching-sense-example{margin:6px 0 0;color:var(--text-secondary);font-size:0.9rem;font-style:italic;line-height:1.45;}.teaching-sense-examples{margin:8px 0 0;padding-left:0;list-style:none;display:grid;gap:6px;}.teaching-sense-examples li{list-style:none;box-sizing:border-box;padding:8px 12px;border-radius:var(--border-radius-sm);background-color:rgba(59,130,246,0.08);background-color:color-mix(in srgb,var(--info-color) 8%,transparent);border:1px solid rgba(59,130,246,0.16);border:1px solid color-mix(in srgb,var(--info-color) 16%,transparent);color:var(--text-primary);line-height:1.45;}.teaching-sense-examples li::before{content:'•';margin-right:8px;color:var(--info-color);font-weight:800;}.teaching-sense-examples small{display:block;margin-top:2px;color:var(--text-muted);font-size:0.82rem;}.teaching-card-section{margin-top:var(--spacing-md);padding-top:var(--spacing-sm);}.teaching-card-section + .teaching-card-section{border-top:1px solid var(--border-color);}.teaching-section-label{display:inline-flex;align-items:center;gap:7px;margin:0 0 10px;padding:5px 12px 5px 10px;border-radius:999px;font-size:0.72rem;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;border:1px solid transparent;}.teaching-section-label i{font-size:0.78rem;opacity:0.9;}.teaching-section-label--definition{background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--vocabulary-color) 12%,transparent);color:var(--vocabulary-color);}.teaching-section-label--examples{background-color:rgba(59,130,246,0.12);background-color:color-mix(in srgb,var(--info-color) 12%,transparent);color:var(--info-color);}.teaching-section-label--synonym{background-color:rgba(20,184,166,0.12);background-color:color-mix(in srgb,var(--grammar-color) 12%,transparent);color:var(--grammar-color);}.teaching-section-label--antonym{background-color:rgba(239,68,68,0.12);background-color:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.teaching-section-label--tag{background-color:rgba(245,158,11,0.14);background-color:color-mix(in srgb,var(--warning-color) 14%,transparent);color:var(--warning-color);}.teaching-section-label--error{background-color:rgba(239,68,68,0.12);background-color:color-mix(in srgb,var(--danger-color) 12%,transparent);color:var(--danger-color);}.teaching-section-label--default{background:var(--bg-tertiary);color:var(--text-secondary);}.teaching-card-section--definition .teaching-def p,.teaching-card-section--definition p{padding:10px 12px;border-radius:var(--border-radius-md);background-color:rgba(99,102,241,0.08);background-color:color-mix(in srgb,var(--vocabulary-color) 8%,transparent);border:1px solid rgba(99,102,241,0.18);border:1px solid color-mix(in srgb,var(--vocabulary-color) 18%,transparent);}.teaching-card-section--examples .teaching-examples li{padding:8px 12px;border-radius:var(--border-radius-sm);background-color:rgba(59,130,246,0.08);background-color:color-mix(in srgb,var(--info-color) 8%,transparent);border:1px solid rgba(59,130,246,0.16);border:1px solid color-mix(in srgb,var(--info-color) 16%,transparent);}.teaching-card-section p{margin:0;color:var(--text-primary);line-height:1.55;}.teaching-def p,.teaching-structure p{font-weight:700;}.teaching-chip-list{display:flex;flex-wrap:wrap;gap:6px;}.teaching-examples{display:grid;gap:8px;padding-left:1.1rem;margin:0;}.teaching-examples li{color:var(--text-primary);line-height:1.45;}.teaching-examples small{display:block;margin-top:2px;color:var(--text-muted);font-size:0.82rem;}.teaching-card-image-wrap{text-align:center;margin-bottom:var(--spacing-sm);}.teaching-card-image-wrap--aside{position:relative;display:grid;place-items:center;width:min(172px,30%);aspect-ratio:var(--teaching-card-image-aspect,1 / 1);overflow:hidden;border-radius:var(--border-radius-md);background:var(--bg-tertiary);border:1px solid var(--border-color);box-shadow:none;}.teaching-card-image-wrap--aside.is-loaded{cursor:zoom-in;}.teaching-card-image-wrap--aside.is-loaded .teaching-card-image{border:1px solid var(--border-color);box-sizing:border-box;border-radius:calc(var(--border-radius-md) - 1px);}.teaching-card-image-zoom-hint{position:absolute;right:6px;bottom:6px;z-index:2;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;font-size:0.7rem;color:#fff;background:rgba(0,0,0,0.45);opacity:0;pointer-events:none;transition:opacity 0.2s ease;}.teaching-card-image-wrap--aside.is-loaded:hover .teaching-card-image-zoom-hint,.teaching-card-image-wrap--aside.is-loaded:focus-visible .teaching-card-image-zoom-hint{opacity:1;}.teaching-card-image-wrap--aside{float:none;width:100%;max-width:none;margin:0;}.teaching-card-image-wrap--aside.is-empty{visibility:hidden;}.teaching-card-image-wrap--aside.is-loading,.teaching-card-image-wrap--aside.is-loaded,.teaching-card-image-wrap--aside.is-error{visibility:visible;}.teaching-card-image{display:block;max-width:100%;border-radius:var(--border-radius-md);max-height:190px;object-fit:cover;}.teaching-card-image-wrap--aside .teaching-card-image{width:100%;height:100%;max-height:none;object-fit:cover;object-position:center;opacity:0;transition:opacity 0.2s ease;}.teaching-card-image-wrap--aside.is-loaded .teaching-card-image{opacity:1;}.teaching-card-image-placeholder{position:absolute;inset:0;display:grid;place-items:center;padding:var(--spacing-sm);color:var(--text-muted);font-size:0.85rem;font-weight:800;text-align:center;}.teaching-card-image-wrap--aside.is-loaded .teaching-card-image-placeholder{display:none;}.teaching-card-image-lightbox{position:absolute;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;border-radius:inherit;overflow:hidden;pointer-events:auto;}.teaching-card-image-lightbox[hidden]{display:none !important;}.teaching-card-image-lightbox-backdrop{position:absolute;inset:0;z-index:1;margin:0;padding:0;border:none;background:var(--card-bg);cursor:zoom-out;}.teaching-card-image-lightbox-frame{position:relative;z-index:2;width:100%;height:100%;padding:0;box-sizing:border-box;pointer-events:none;}.teaching-card-image-lightbox-img{display:block;width:100%;height:100%;object-fit:contain;object-position:center;border:none;border-radius:0;box-sizing:border-box;background:transparent;}.teaching-card-image-lightbox-close-btn{position:absolute;top:10px;right:10px;z-index:3;width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--border-color);border-radius:50%;background:var(--card-bg);color:var(--text-secondary);cursor:pointer;box-shadow:var(--shadow-sm);}.teaching-card-image-lightbox-close-btn:hover{color:var(--text-primary);border-color:var(--text-muted);}.teaching-card--image-expanded .teaching-card-scroll,.teaching-card--image-expanded .teaching-card-meta{visibility:hidden;pointer-events:none;}.teaching-card--image-expanded > #teaching-close-area{visibility:hidden;pointer-events:none;}[data-theme="dark"] .teaching-card-image-wrap--aside{border-color:var(--border-color);}[data-theme="dark"] .teaching-card-image-wrap--aside.is-loaded .teaching-card-image{border-color:var(--border-color);}.teaching-feedback-details{margin-top:var(--spacing-sm);font-size:0.9rem;}.teaching-feedback-details > summary{cursor:pointer;color:var(--text-secondary);}.teaching-feedback-body{margin-top:var(--spacing-xs);padding:var(--spacing-sm);border-radius:var(--border-radius-sm);background:var(--bg-tertiary);}.teaching-feedback-text{margin:6px 0 0;font-size:0.88rem;color:var(--text-primary);white-space:pre-wrap;}.teaching-skeleton,.teaching-card.is-skeleton{position:relative;overflow:hidden;background:var(--bg-tertiary);border-radius:var(--border-radius-md);}.teaching-skeleton::after,.teaching-card.is-skeleton::after{content:'';position:absolute;inset:0;background:linear-gradient( 90deg,transparent,rgba(255,255,255,0.45),transparent );transform:translateX(-100%);animation:teachingSkeletonShimmer 1.4s ease-in-out 12;animation-fill-mode:forwards;}[data-theme="dark"] .teaching-skeleton::after,[data-theme="dark"] .teaching-card.is-skeleton::after{background:linear-gradient( 90deg,transparent,rgba(255,255,255,0.08),transparent );}@keyframes teachingSkeletonShimmer{100%{transform:translateX(100%);}}@media (max-width:768px),(hover:none) and (pointer:coarse){.teaching-skeleton::after,.teaching-card.is-skeleton::after{animation-iteration-count:1;animation-duration:1s;}}@media (prefers-reduced-motion:reduce){.teaching-skeleton::after,.teaching-card.is-skeleton::after{animation:none;}}.teaching-skeleton--line{height:14px;border-radius:8px;margin-bottom:8px;}.teaching-skeleton--line.is-short{width:40%;}.teaching-skeleton--line.is-mid{width:65%;}.teaching-skeleton--line.is-long{width:90%;}.teaching-skeleton--block{height:120px;border-radius:var(--border-radius-md);}.teaching-rating-panel{padding:var(--spacing-md);border-radius:var(--border-radius-md);border:var(--border-width) var(--border-style) var(--border-color);background:var(--bg-secondary);}.teaching-rating-stars{display:flex;gap:4px;margin-bottom:var(--spacing-sm);}.teaching-rating-star{background:none;border:none;font-size:1.8rem;cursor:pointer;color:var(--border-color);padding:0 2px;}.teaching-rating-star.is-on{color:var(--warning-color);}.teaching-rating-star:disabled{opacity:0.6;cursor:default;}.teaching-rating-feedback{width:100%;box-sizing:border-box;}.teaching-rating-meta{display:flex;justify-content:space-between;font-size:0.8rem;color:var(--text-muted);margin:4px 0 var(--spacing-sm);}.teaching-rating-submit{width:100%;}@media (max-width:768px){.teaching-classroom-root .chat-container{padding:var(--spacing-xs);}.teaching-topbar{flex-wrap:wrap;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);}.teaching-topbar-center{order:3;flex-basis:100%;max-width:none;margin:0;}.teaching-topbar-teacher{max-width:200px;gap:6px;margin-left:0;}.teaching-teacher-avatar{width:28px;height:28px;}.teaching-teacher-meta{gap:6px;}.teaching-teacher-name{font-size:0.75rem;max-width:72px;}.teaching-teacher-wave{height:22px;}.teaching-progress-text{min-width:28px;}.teaching-phase-badge{font-size:0.8rem;}.teaching-topbar-badge{font-size:0.65rem;padding:2px 8px;}.teaching-main{padding:var(--spacing-sm) var(--spacing-xs) calc(var(--spacing-sm) + 10px);}.teaching-card{width:min( 100%,var(--teaching-card-max-width,820px),calc(min(var(--teaching-card-max-height,78vh),100%) * var(--teaching-card-w-over-h,1)) );max-height:min(var(--teaching-card-max-height,78vh),100%);border-radius:var(--border-radius-md);}.teaching-card-scroll{padding:var(--spacing-md) var(--spacing-md) calc(var(--spacing-sm) + 25px);}.teaching-card-meta{padding:0 var(--spacing-md) var(--spacing-sm);}.teaching-card-title{font-size:clamp(1.2rem,4vw,1.5rem);}.teaching-card--vocabulary .teaching-card-title{font-size:clamp(1.8rem,6.5vw,2.5rem);}.teaching-card--grammar .teaching-card-title,.teaching-card--slang .teaching-card-title{font-size:clamp(1.4rem,5.5vw,2.0rem);}.teaching-card-title-row{align-items:center;gap:6px;}.teaching-card-layout{grid-template-columns:1fr;grid-template-areas:"intro" "aside" "body";row-gap:var(--spacing-sm);column-gap:0;}.teaching-card-aside{max-width:160px;justify-self:center;width:100%;margin:var(--spacing-xs) 0;}.teaching-card-image-wrap--aside{width:100%;}.teaching-title-play{padding:7px 10px;font-size:0.78rem;}.teaching-toolbar{justify-content:space-between;gap:4px;padding:4px 6px;}.teaching-toolbar .cartoon-btn{flex:1 1 auto;min-width:0;padding:6px 2px;font-size:0;gap:0;}.teaching-toolbar .cartoon-btn i{font-size:14px;margin:0;}.teaching-toolbar .cartoon-btn-ptt{flex:0 0 auto;width:40px;height:40px;min-width:40px;font-size:16px;border-radius:50%;}.teaching-rating-star{font-size:1.6rem;}}@media (max-width:480px){.teaching-toolbar .cartoon-btn{flex:1 1 45%;}.teaching-toolbar .cartoon-btn-ptt{flex:0 0 auto;width:50px;height:50px;min-width:50px;border-radius:50%;}}@media (orientation:portrait){.teaching-toolbar{flex-wrap:wrap;}.teaching-toolbar .cartoon-btn-ptt{flex:0 0 100%;width:100%;min-width:0;height:48px;border-radius:24px;margin-left:0;font-size:18px;}.teaching-toolbar .cartoon-btn-ptt .teaching-ptt-status{display:inline;margin-left:8px;font-size:0.86rem;font-weight:700;}.teaching-toolbar .cartoon-btn:not(.cartoon-btn-ptt){flex:1 1 0;min-width:0;}}[data-theme="dark"] .teaching-badge{background-color:rgba(167,139,250,0.16);background-color:color-mix(in srgb,var(--accent-color) 16%,transparent);}[data-theme="dark"] .teaching-difficulty-badge--beginner{background-color:rgba(52,211,153,0.16);background-color:color-mix(in srgb,var(--success-color) 16%,transparent);}[data-theme="dark"] .teaching-difficulty-badge--intermediate{background-color:rgba(251,191,36,0.16);background-color:color-mix(in srgb,var(--warning-color) 16%,transparent);}[data-theme="dark"] .teaching-difficulty-badge--advanced{background-color:rgba(248,113,113,0.16);background-color:color-mix(in srgb,var(--danger-color) 16%,transparent);}[data-theme="dark"] .teaching-meta-chip,[data-theme="dark"] .teaching-info-chip{box-shadow:none;}[data-theme="dark"] .teaching-info-chip--synonym{background-color:rgba(45,212,191,0.16);background-color:color-mix(in srgb,var(--grammar-color) 16%,transparent);}[data-theme="dark"] .teaching-info-chip--antonym{background-color:rgba(248,113,113,0.16);background-color:color-mix(in srgb,var(--danger-color) 16%,transparent);}[data-theme="dark"] .teaching-info-chip--collocation{background-color:rgba(52,211,153,0.16);background-color:color-mix(in srgb,var(--success-color) 16%,transparent);}[data-theme="dark"] .teaching-info-chip--form{background-color:rgba(96,165,250,0.16);background-color:color-mix(in srgb,var(--info-color) 16%,transparent);}[data-theme="dark"] .teaching-info-chip--related{background-color:rgba(167,139,250,0.16);background-color:color-mix(in srgb,var(--accent-color) 16%,transparent);}[data-theme="dark"] .teaching-meta-chip--attr{background-color:rgba(251,191,36,0.16);background-color:color-mix(in srgb,var(--warning-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--collocation{background-color:rgba(52,211,153,0.16);background-color:color-mix(in srgb,var(--success-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--form{background-color:rgba(96,165,250,0.16);background-color:color-mix(in srgb,var(--info-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--related{background-color:rgba(167,139,250,0.16);background-color:color-mix(in srgb,var(--accent-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--definition{background-color:rgba(165,166,250,0.16);background-color:color-mix(in srgb,var(--vocabulary-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--examples{background-color:rgba(96,165,250,0.16);background-color:color-mix(in srgb,var(--info-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--synonym{background-color:rgba(45,212,191,0.16);background-color:color-mix(in srgb,var(--grammar-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--antonym{background-color:rgba(248,113,113,0.16);background-color:color-mix(in srgb,var(--danger-color) 16%,transparent);}[data-theme="dark"] .teaching-section-label--tag{background-color:rgba(251,191,36,0.16);background-color:color-mix(in srgb,var(--warning-color) 16%,transparent);}[data-theme="dark"] .teaching-card-section + .teaching-card-section{border-top-color:var(--border-color);}.teaching-completion-backdrop{position:fixed;inset:0;z-index:1100;display:flex;align-items:center;justify-content:center;padding:var(--spacing-md);background:rgba(27,27,35,0.55);backdrop-filter:none;-webkit-backdrop-filter:none;animation:teachingCompletionFadeIn 0.35s ease;overflow-y:auto;}.teaching-completion-modal{position:relative;width:min(96vw,560px);max-height:calc(var(--app-height,100vh) * 0.9);padding:var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);border-radius:var(--border-radius-lg);background:var(--bg-secondary);box-shadow:var(--shadow-lg);border:1px solid var(--border-color);overflow:hidden;display:flex;flex-direction:column;animation:teachingCompletionPop 0.6s cubic-bezier(0.175,0.885,0.32,1.275);}.teaching-completion-modal-accent{position:absolute;top:0;left:0;right:0;height:8px;background:var(--gradient-primary);z-index:10;}[data-theme="dark"] .teaching-completion-backdrop{background:rgba(0,0,0,0.66);}[data-theme="dark"] .teaching-completion-modal.cartoon-box,[data-theme="dark"] .teaching-completion-modal{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);}[data-theme="dark"] .teaching-completion-title{color:var(--primary-color);text-shadow:none;}[data-theme="dark"] .teaching-completion-subtitle,[data-theme="dark"] .teaching-completion-lesson-progress{color:var(--text-secondary);}[data-theme="dark"] .teaching-completion-diff-heading{color:var(--text-secondary);}[data-theme="dark"] .teaching-completion-diff-icon{background:var(--bg-tertiary);}[data-theme="dark"] .teaching-completion-diff--beginner .teaching-completion-diff-icon{color:var(--success-color);background:rgba(52,211,153,0.18);background:color-mix(in srgb,var(--success-color) 18%,transparent);}[data-theme="dark"] .teaching-completion-diff--intermediate .teaching-completion-diff-icon{color:var(--warning-color);background:rgba(251,191,36,0.18);background:color-mix(in srgb,var(--warning-color) 18%,transparent);}[data-theme="dark"] .teaching-completion-diff--advanced .teaching-completion-diff-icon{color:var(--danger-color);background:rgba(248,113,113,0.18);background:color-mix(in srgb,var(--danger-color) 18%,transparent);}[data-theme="dark"] .teaching-completion-lesson-progress > i{color:var(--success-color);}[data-theme="dark"] .teaching-completion-diff{box-shadow:none;}[data-theme="dark"] .teaching-completion-diff--beginner{background:rgba(52,211,153,0.12);background:color-mix(in srgb,var(--success-color) 12%,transparent);border-color:color-mix(in srgb,var(--success-color) 40%,transparent);color:var(--success-color);}[data-theme="dark"] .teaching-completion-diff--intermediate{background:rgba(251,191,36,0.12);background:color-mix(in srgb,var(--warning-color) 12%,transparent);border-color:color-mix(in srgb,var(--warning-color) 40%,transparent);color:var(--warning-color);}[data-theme="dark"] .teaching-completion-diff--advanced{background:rgba(248,113,113,0.12);background:color-mix(in srgb,var(--danger-color) 12%,transparent);border-color:color-mix(in srgb,var(--danger-color) 40%,transparent);color:var(--danger-color);}[data-theme="dark"] .teaching-completion-diff-label{color:inherit;opacity:1;}[data-theme="dark"] .teaching-completion-footer{border-top-color:var(--border-color);}[data-theme="dark"] .teaching-completion-body .teaching-achievement-stream:not(:empty){background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--border-radius-md);padding:var(--spacing-xs);}[data-theme="dark"] .teaching-completion-modal--no-celebrate .teaching-completion-title{color:var(--text-primary);}[data-theme="dark"] .teaching-completion-modal--no-celebrate .teaching-completion-trophy{background:linear-gradient(135deg,var(--text-muted),var(--text-secondary));color:var(--bg-secondary);box-shadow:var(--shadow-md);}.teaching-completion-confetti{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:5;}.teaching-confetti-piece{position:absolute;top:-20px;left:var(--x);width:13px;height:7px;background-color:var(--color);border-radius:1px;pointer-events:none;opacity:0;transform:scale(var(--size)) translate3d(0,0,0);transform-origin:center;animation:teachingConfettiFallSimple var(--fall-dur) var(--delay) linear forwards;}.teaching-confetti-piece--rect{display:block;}.teaching-confetti-piece--circle{width:9px;height:9px;background-color:var(--color);border-radius:50%;display:block;transform-origin:center;transform:scale(var(--size));animation:teachingConfettiSwayAndSpin var(--sway-dur) infinite ease-in-out;}.teaching-confetti-piece--triangle{width:10px;height:10px;background-color:var(--color);clip-path:polygon(50% 0%,0% 100%,100% 100%);-webkit-clip-path:polygon(50% 0%,0% 100%,100% 100%);display:block;transform-origin:center;transform:scale(var(--size));animation:teachingConfettiSwayAndSpin var(--sway-dur) infinite ease-in-out;}.teaching-confetti-piece--ribbon{width:3px;height:22px;background-color:var(--color);border-radius:1px;display:block;transform-origin:center;transform:scale(var(--size));animation:teachingRibbonTwist var(--sway-dur) infinite ease-in-out;}.teaching-confetti-piece--has-content{font-size:calc(1.4rem * var(--size));color:var(--color);line-height:1;display:inline-block;transform-origin:center;text-shadow:0 1px 3px rgba(0,0,0,0.12);animation:teachingConfettiSwayAndSpin var(--sway-dur) infinite ease-in-out;}@keyframes teachingConfettiSwayAndSpin{0%{transform:scale(var(--size)) translateX(calc(-1 * var(--sway-amp))) rotate(0deg) rotateY(0deg);}50%{transform:scale(var(--size)) translateX(var(--sway-amp)) rotate(180deg) rotateY(180deg);}100%{transform:scale(var(--size)) translateX(calc(-1 * var(--sway-amp))) rotate(360deg) rotateY(360deg);}}@keyframes teachingRibbonTwist{0%{transform:scale(var(--size)) translateX(calc(-1 * var(--sway-amp))) rotate(0deg) rotateY(0deg) skewX(0deg);}50%{transform:scale(var(--size)) translateX(var(--sway-amp)) rotate(180deg) rotateY(180deg) skewX(12deg);}100%{transform:scale(var(--size)) translateX(calc(-1 * var(--sway-amp))) rotate(360deg) rotateY(360deg) skewX(0deg);}}@keyframes teachingConfettiFallSimple{0%{transform:scale(var(--size)) translate3d(0,0,0);opacity:0;}8%{opacity:1;}90%{opacity:1;}100%{transform:scale(var(--size)) translate3d(var(--drift-x),580px,0);opacity:0;}}.teaching-completion-celebrate{position:relative;z-index:1;text-align:center;padding:var(--spacing-sm) 0 var(--spacing-md);}.teaching-completion-trophy{display:inline-flex;align-items:center;justify-content:center;width:76px;height:76px;margin:0 auto var(--spacing-sm);border-radius:50%;background:var(--gradient-primary);color:#FFFFFF;font-size:2.4rem;box-shadow:0 10px 24px rgba(99,102,241,0.35);box-shadow:0 10px 24px color-mix(in srgb,var(--primary-color) 35%,transparent);animation:teachingTrophyBounce 1.8s ease-in-out infinite;}@keyframes teachingTrophyBounce{0%,100%{transform:translateY(0) scale(1,1) rotate(-5deg);}30%{transform:translateY(-12px) scale(0.95,1.1) rotate(5deg);}50%{transform:translateY(-15px) scale(0.9,1.15) rotate(10deg);}70%{transform:translateY(-6px) scale(1.05,0.95) rotate(-2deg);}90%{transform:translateY(0) scale(1.02,0.98) rotate(-5deg);}}.teaching-completion-title{margin:0 0 8px;font-size:2.1rem;font-family:var(--font-heading);color:var(--primary-color);font-weight:700;}.teaching-completion-subtitle{display:flex;align-items:flex-start;justify-content:center;gap:8px;margin:0;color:var(--text-secondary);font-size:0.95rem;line-height:1.45;text-align:left;max-width:420px;margin-left:auto;margin-right:auto;}.teaching-completion-subtitle > i{flex-shrink:0;margin-top:2px;font-size:1rem;color:var(--primary-color);opacity:0.95;}.teaching-completion-lesson-progress{display:inline-flex;align-items:center;justify-content:center;gap:16px;margin:var(--spacing-md) auto 0;padding:14px 28px;background:rgba(16,185,129,0.08);background:color-mix(in srgb,var(--success-color) 8%,var(--bg-secondary));border:1px solid rgba(16,185,129,0.35);border:1px solid color-mix(in srgb,var(--success-color) 35%,transparent);box-shadow:var(--shadow-sm);border-radius:var(--border-radius-lg);position:relative;overflow:hidden;transition:var(--transition);max-width:90%;}.teaching-completion-lesson-progress:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);}.progress-paw-watermark{position:absolute;right:-12px;bottom:-15px;font-size:4rem;color:rgba(16,185,129,0.04);color:color-mix(in srgb,var(--success-color) 4%,transparent);pointer-events:none;transform:rotate(20deg);z-index:0;}[data-theme="dark"] .progress-paw-watermark{color:rgba(45,199,112,0.04);color:color-mix(in srgb,var(--success-color) 4%,transparent);}.teaching-completion-lesson-progress > i{font-size:2.1rem;color:var(--success-color);z-index:1;animation:teachingTrophyBounce 2s ease-in-out infinite;}.progress-text-wrap{display:flex;flex-direction:column;align-items:flex-start;text-align:left;z-index:1;}.progress-label{font-size:0.75rem;font-weight:700;letter-spacing:1px;color:var(--success-color);opacity:0.9;text-transform:uppercase;}.progress-value{font-size:1.6rem;font-weight:700;font-family:var(--font-heading);color:var(--success-color);line-height:1.1;}[data-theme="dark"] .teaching-completion-lesson-progress{background:rgba(52,211,153,0.10);background:color-mix(in srgb,var(--success-color) 10%,transparent);border-color:color-mix(in srgb,var(--success-color) 40%,transparent);}[data-theme="dark"] .teaching-completion-lesson-progress > i{color:var(--success-color);}[data-theme="dark"] .progress-label{color:var(--success-color);}[data-theme="dark"] .progress-value{color:var(--success-color);text-shadow:none;}.teaching-completion-modal--no-celebrate .teaching-completion-trophy{background:linear-gradient(135deg,var(--text-muted),var(--text-secondary));box-shadow:var(--shadow-md);animation:none;}.teaching-completion-modal--no-celebrate .teaching-completion-title{color:var(--text-primary);}@media (prefers-reduced-motion:reduce){.teaching-completion-backdrop,.teaching-completion-modal,.teaching-completion-trophy,.teaching-completion-lesson-progress,.teaching-completion-lesson-progress > i,.teaching-completion-diff,.teaching-achievement-toast{animation:none !important;}}.teaching-completion-body{position:relative;z-index:1;padding:12px 18px 12px 18px;scrollbar-width:none;-ms-overflow-style:none;}.teaching-completion-body::-webkit-scrollbar{display:none;}.teaching-completion-vocab-summary{margin-bottom:var(--spacing-md);padding-bottom:12px;}.teaching-completion-diff-heading{display:flex;align-items:center;justify-content:center;gap:6px;margin:var(--spacing-md) 0 var(--spacing-xs);font-size:0.78rem;font-weight:800;letter-spacing:0.4px;text-transform:uppercase;color:var(--text-muted);}.teaching-completion-diff-heading > i{font-size:0.85rem;color:var(--primary-color);opacity:0.9;}.teaching-completion-diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px;}.teaching-completion-diff{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:var(--spacing-md) 6px;border-radius:var(--border-radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition);animation:teachingCompletionFadeUp 0.45s var(--ease-out);}.teaching-completion-diff:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}.teaching-completion-diff-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;font-size:0.85rem;background:var(--bg-secondary);margin-bottom:2px;}.teaching-completion-diff--beginner .teaching-completion-diff-icon{color:var(--success-color);background:rgba(16,185,129,0.14);background:color-mix(in srgb,var(--success-color) 14%,transparent);}.teaching-completion-diff--intermediate .teaching-completion-diff-icon{color:var(--warning-color);background:rgba(245,158,11,0.14);background:color-mix(in srgb,var(--warning-color) 14%,transparent);}.teaching-completion-diff--advanced .teaching-completion-diff-icon{color:var(--danger-color);background:rgba(239,68,68,0.12);background:color-mix(in srgb,var(--danger-color) 12%,transparent);}.teaching-completion-diff-num{font-size:1.5rem;font-weight:700;font-family:var(--font-heading);font-variant-numeric:tabular-nums;}.teaching-completion-diff-label{font-size:0.72rem;font-weight:700;text-transform:uppercase;letter-spacing:0.35px;text-align:center;}.teaching-completion-diff--beginner{background:rgba(16,185,129,0.08);background:color-mix(in srgb,var(--success-color) 8%,var(--bg-secondary));border-color:rgba(16,185,129,0.35);border-color:color-mix(in srgb,var(--success-color) 35%,transparent);color:var(--success-color);}.teaching-completion-diff--intermediate{background:rgba(245,158,11,0.09);background:color-mix(in srgb,var(--warning-color) 9%,var(--bg-secondary));border-color:rgba(245,158,11,0.38);border-color:color-mix(in srgb,var(--warning-color) 38%,transparent);color:var(--warning-color);}.teaching-completion-diff--advanced{background:rgba(239,68,68,0.08);background:color-mix(in srgb,var(--danger-color) 8%,var(--bg-secondary));border-color:rgba(239,68,68,0.35);border-color:color-mix(in srgb,var(--danger-color) 35%,transparent);color:var(--danger-color);}.teaching-completion-diff--beginner:hover{box-shadow:var(--shadow-md);}.teaching-completion-diff--intermediate:hover{box-shadow:var(--shadow-md);}.teaching-completion-diff--advanced:hover{box-shadow:var(--shadow-md);}.teaching-completion-body .teaching-achievement-stream{max-height:200px;overflow-y:auto;}.teaching-completion-body .teaching-achievement-stream:empty{display:none;margin:0;padding:0;border:none;min-height:0;}.teaching-completion-footer{position:relative;z-index:1;margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--border-color);display:flex;justify-content:center;}.teaching-completion-ok{min-width:200px;padding:12px 28px;font-size:1rem;font-weight:700;letter-spacing:0.5px;border-radius:var(--border-radius-round);box-shadow:0 8px 20px rgba(99,102,241,0.28);box-shadow:0 8px 20px color-mix(in srgb,var(--primary-color) 28%,transparent);transition:var(--transition);}.teaching-completion-ok:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(99,102,241,0.36);box-shadow:0 12px 26px color-mix(in srgb,var(--primary-color) 36%,transparent);}@keyframes teachingCompletionFadeIn{from{opacity:0;}to{opacity:1;}}@keyframes teachingCompletionPop{0%{transform:scale(0.85) translateY(20px);opacity:0;}60%{transform:scale(1.04) translateY(0);opacity:1;}100%{transform:scale(1) translateY(0);}}@keyframes teachingCompletionFadeUp{from{transform:translateY(10px);opacity:0;}to{transform:translateY(0);opacity:1;}}.teaching-chip{padding:4px 10px;border-radius:var(--border-radius-round);background:var(--bg-tertiary);font-size:0.8rem;}.teaching-achievement-stream{margin-top:var(--spacing-md);}.teaching-achievement-toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm);margin-bottom:6px;border-radius:var(--border-radius-sm);background:rgba(139,92,246,0.12);background:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color);animation:teachingAchIn 0.35s ease;}.teaching-achievement-toast.tier-gold{background:rgba(240,178,50,0.14);background:color-mix(in srgb,#F0B232 14%,transparent);border:1px solid color-mix(in srgb,#F0B232 45%,transparent);color:var(--warning-color);}.teaching-achievement-toast.tier-silver{background:rgba(192,198,209,0.20);background:color-mix(in srgb,#C0C6D1 20%,transparent);border:1px solid color-mix(in srgb,#C0C6D1 55%,transparent);color:color-mix(in srgb,#C0C6D1 45%,var(--text-primary));}.teaching-achievement-toast.tier-bronze{background:rgba(205,127,50,0.14);background:color-mix(in srgb,#CD7F32 14%,transparent);border:1px solid color-mix(in srgb,#CD7F32 45%,transparent);color:#CD7F32;}.teaching-ach-icon{font-size:1.4rem;width:32px;text-align:center;}.teaching-ach-text{flex:1;display:flex;flex-direction:column;}.teaching-ach-tier{font-size:0.7rem;text-transform:uppercase;letter-spacing:1px;opacity:0.75;}.teaching-ach-points{font-weight:800;font-size:1.05rem;padding:2px 8px;border-radius:var(--border-radius-round);background:rgba(99,102,241,0.10);background:color-mix(in srgb,var(--primary-color) 10%,transparent);}.teaching-achievement-toast.is-out{opacity:0;transition:opacity 0.4s ease;}@keyframes teachingAchIn{from{transform:translateY(8px);opacity:0;}to{transform:translateY(0);opacity:1;}}@media (max-width:768px){.teaching-completion-modal{padding:var(--spacing-md);width:96vw;max-height:calc(var(--app-height,100vh) * 0.92);}.teaching-completion-trophy{width:60px;height:60px;font-size:1.8rem;}.teaching-completion-title{font-size:1.35rem;}.teaching-completion-diff-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;}.teaching-completion-diff-num{font-size:1.2rem;}.teaching-completion-diff-label{font-size:0.65rem;}.teaching-completion-ok{min-width:160px;padding:10px 22px;}}.teaching-stats-tabs{flex:none;flex-shrink:0;align-self:flex-start;margin:0 0 var(--spacing-md) 0;}.teaching-stats-tabs .prompt-tab i{margin-right:6px;opacity:0.85;}:root{--teaching-ring-track:rgba(27,27,35,0.10);--teaching-ring-track:color-mix(in srgb,var(--text-primary) 10%,transparent);--teaching-stats-surface:var(--bg-secondary);--teaching-stats-surface-muted:var(--bg-tertiary);--teaching-stats-border-strong:var(--border-color);--teaching-stats-shadow:var(--shadow-sm);--teaching-diff-beginner-color:var(--success-color);--teaching-diff-intermediate-color:var(--warning-color);--teaching-diff-advanced-color:var(--danger-color);--teaching-diff-beginner-bar:#6EE7B7;--teaching-diff-beginner-bar:color-mix(in srgb,var(--success-color) 62%,white);--teaching-diff-intermediate-bar:#FCD34D;--teaching-diff-intermediate-bar:color-mix(in srgb,var(--warning-color) 62%,white);--teaching-diff-advanced-bar:#FCA5A5;--teaching-diff-advanced-bar:color-mix(in srgb,var(--danger-color) 62%,white);}[data-theme="dark"]{--teaching-ring-track:rgba(255,255,255,0.14);--teaching-ring-track:color-mix(in srgb,var(--text-primary) 14%,transparent);--teaching-diff-beginner-bar:#34D399;--teaching-diff-beginner-bar:color-mix(in srgb,var(--success-color) 78%,white);--teaching-diff-intermediate-bar:#FBBF24;--teaching-diff-intermediate-bar:color-mix(in srgb,var(--warning-color) 78%,white);--teaching-diff-advanced-bar:#F87171;--teaching-diff-advanced-bar:color-mix(in srgb,var(--danger-color) 78%,white);}.teaching-stats-overview{display:flex;flex-direction:column;gap:var(--spacing-md);}.teaching-stats-lang-tabs{display:flex;flex-wrap:wrap;gap:var(--spacing-xs);}.teaching-stats-lang-tab{padding:6px 14px;border-radius:var(--border-radius-round);border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-secondary);font-size:0.82rem;cursor:pointer;transition:var(--transition);}.teaching-stats-lang-tab:hover{border-color:var(--primary-color);color:var(--text-primary);}.teaching-stats-lang-tab.active{background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--primary-color) 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5%,var(--bg-secondary));}.teaching-stats-summary-text{flex:1;min-width:0;}.teaching-stats-hero{display:grid;grid-template-columns:auto 1fr;gap:var(--spacing-md) var(--spacing-lg);align-items:start;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-lg);border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);transition:var(--transition);}.teaching-stats-hero--highest-locked{background:var(--bg-secondary);border-color:var(--border-color);}.teaching-stats-hero--highest-sprout{border-color:rgba(16,185,129,0.38);border-color:color-mix(in srgb,var(--success-color) 38%,transparent);}.teaching-stats-hero--highest-novice{border-color:rgba(99,102,241,0.38);border-color:color-mix(in srgb,var(--primary-color) 38%,transparent);}.teaching-stats-hero--highest-bronze{border-color:rgba(255,122,89,0.42);border-color:color-mix(in srgb,var(--secondary-color) 42%,transparent);}.teaching-stats-hero--highest-gold{border-color:rgba(245,158,11,0.42);border-color:color-mix(in srgb,var(--warning-color) 42%,transparent);}.teaching-stats-hero--highest-jade{border-color:rgba(20,184,166,0.38);border-color:color-mix(in srgb,var(--grammar-color) 38%,transparent);}.teaching-stats-hero--highest-platinum{border-color:rgba(110,110,122,0.42);border-color:color-mix(in srgb,var(--text-secondary) 42%,transparent);}.teaching-stats-hero--highest-diamond{border-color:rgba(59,130,246,0.38);border-color:color-mix(in srgb,var(--info-color) 38%,transparent);}.teaching-stats-hero--highest-master{border-color:rgba(139,92,246,0.42);border-color:color-mix(in srgb,var(--accent-color) 42%,transparent);}.teaching-stats-hero-left{display:flex;align-items:center;justify-content:center;}.teaching-stats-hero-copy{min-width:0;}.teaching-stats-hero-heading{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:var(--spacing-sm) var(--spacing-md);}.teaching-stats-hero-heading-text{flex:1;min-width:160px;}.teaching-stats-hero-badges{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:flex-end;gap:14px;flex-shrink:0;margin-top:4px;padding-bottom:12px;}.teaching-stats-hero-badge{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;width:78px;height:92px;padding:10px 4px 8px;border-radius:var(--border-radius-lg);border:1px solid var(--badge-border,var(--border-color));background:var(--badge-bg-gradient,var(--bg-tertiary));box-shadow:var(--shadow-sm);text-align:center;transition:var(--transition);cursor:pointer;z-index:1;}.teaching-stats-hero-badge:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}.teaching-stats-hero-badge::before,.teaching-stats-hero-badge::after{content:'';position:absolute;bottom:-15px;width:15px;height:22px;background:var(--badge-ribbon-bg,var(--bg-tertiary));border:1px solid var(--badge-border,var(--border-color));z-index:-1;transform-origin:top center;transition:var(--transition);}.teaching-stats-hero-badge::before{left:11px;transform:rotate(-12deg);clip-path:polygon(0 0,100% 0,100% 100%,50% 75%,0 100%);}.teaching-stats-hero-badge::after{right:11px;transform:rotate(12deg);clip-path:polygon(0 0,100% 0,100% 100%,50% 75%,0 100%);}.teaching-stats-hero-badge:hover::before{transform:rotate(-16deg);}.teaching-stats-hero-badge:hover::after{transform:rotate(16deg);}.teaching-stats-hero-badge-type-icon{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--border-radius-round);font-size:0.85rem;margin-bottom:1px;border:1px solid var(--badge-border,var(--border-color));background:var(--bg-secondary);}.teaching-stats-hero-badge-tier-medal{position:absolute;top:-6px;right:-6px;width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--border-radius-round);font-size:0.65rem;border:1px solid var(--badge-border,var(--border-color));background:var(--bg-secondary);box-shadow:var(--shadow-sm);z-index:2;transition:var(--transition);}.teaching-stats-hero-badge-tier-medal i{color:var(--badge-text-color,var(--text-primary));}.teaching-stats-hero-badge:hover .teaching-stats-hero-badge-tier-medal{transform:rotate(10deg);}.teaching-stats-hero-badge-type{font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.04em;color:var(--text-muted);margin-top:1px;}.teaching-stats-hero-badge-tier{font-size:0.88rem;font-weight:700;line-height:1.1;color:var(--badge-text-color,var(--text-primary));margin:2px 0;}.teaching-stats-hero-badge.is-locked{--badge-bg-gradient:linear-gradient(135deg,rgba(110,110,122,0.10),rgba(110,110,122,0.05));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--text-secondary) 10%,transparent),color-mix(in srgb,var(--text-secondary) 5%,transparent));--badge-border:var(--border-color);--badge-text-color:var(--text-muted);--badge-ribbon-bg:var(--bg-tertiary);opacity:0.75;}.teaching-stats-hero-badge.is-locked .teaching-stats-hero-badge-type-icon{background:var(--bg-tertiary) !important;color:var(--text-muted) !important;border-color:var(--border-color) !important;}.teaching-stats-hero-badge.is-locked .teaching-stats-hero-badge-type,.teaching-stats-hero-badge.is-locked .teaching-stats-hero-badge-tier{color:var(--text-muted) !important;text-shadow:none !important;}.teaching-stats-hero-badge.is-locked .teaching-stats-hero-badge-tier-medal{background:var(--bg-tertiary) !important;color:var(--text-muted) !important;border-color:var(--border-color) !important;}.teaching-stats-hero-badge.is-locked .teaching-stats-hero-badge-tier-medal i{color:var(--text-muted) !important;}.teaching-stats-hero-badge--tier-sprout{--badge-bg-gradient:linear-gradient(135deg,rgba(16,185,129,0.14),rgba(16,185,129,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--success-color) 14%,transparent),color-mix(in srgb,var(--success-color) 6%,transparent));--badge-border:rgba(16,185,129,0.45);--badge-border:color-mix(in srgb,var(--success-color) 45%,transparent);--badge-text-color:var(--success-color);--badge-ribbon-bg:rgba(16,185,129,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--success-color) 16%,transparent);}.teaching-stats-hero-badge--tier-novice{--badge-bg-gradient:linear-gradient(135deg,rgba(99,102,241,0.14),rgba(99,102,241,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--primary-color) 14%,transparent),color-mix(in srgb,var(--primary-color) 6%,transparent));--badge-border:rgba(99,102,241,0.45);--badge-border:color-mix(in srgb,var(--primary-color) 45%,transparent);--badge-text-color:var(--primary-color);--badge-ribbon-bg:rgba(99,102,241,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--primary-color) 16%,transparent);}.teaching-stats-hero-badge--tier-bronze{--badge-bg-gradient:linear-gradient(135deg,rgba(255,122,89,0.14),rgba(255,122,89,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--secondary-color) 14%,transparent),color-mix(in srgb,var(--secondary-color) 6%,transparent));--badge-border:rgba(255,122,89,0.45);--badge-border:color-mix(in srgb,var(--secondary-color) 45%,transparent);--badge-text-color:var(--secondary-color);--badge-ribbon-bg:rgba(255,122,89,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--secondary-color) 16%,transparent);}.teaching-stats-hero-badge--tier-gold{--badge-bg-gradient:linear-gradient(135deg,rgba(245,158,11,0.16),rgba(245,158,11,0.07));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--warning-color) 16%,transparent),color-mix(in srgb,var(--warning-color) 7%,transparent));--badge-border:rgba(245,158,11,0.48);--badge-border:color-mix(in srgb,var(--warning-color) 48%,transparent);--badge-text-color:var(--warning-color);--badge-ribbon-bg:rgba(245,158,11,0.18);--badge-ribbon-bg:color-mix(in srgb,var(--warning-color) 18%,transparent);}.teaching-stats-hero-badge--tier-jade{--badge-bg-gradient:linear-gradient(135deg,rgba(20,184,166,0.14),rgba(20,184,166,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--grammar-color) 14%,transparent),color-mix(in srgb,var(--grammar-color) 6%,transparent));--badge-border:rgba(20,184,166,0.45);--badge-border:color-mix(in srgb,var(--grammar-color) 45%,transparent);--badge-text-color:var(--grammar-color);--badge-ribbon-bg:rgba(20,184,166,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--grammar-color) 16%,transparent);}.teaching-stats-hero-badge--tier-platinum{--badge-bg-gradient:linear-gradient(135deg,rgba(110,110,122,0.13),rgba(110,110,122,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--text-secondary) 13%,transparent),color-mix(in srgb,var(--text-secondary) 6%,transparent));--badge-border:rgba(110,110,122,0.45);--badge-border:color-mix(in srgb,var(--text-secondary) 45%,transparent);--badge-text-color:var(--text-secondary);--badge-ribbon-bg:rgba(110,110,122,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--text-secondary) 16%,transparent);}.teaching-stats-hero-badge--tier-diamond{--badge-bg-gradient:linear-gradient(135deg,rgba(59,130,246,0.14),rgba(59,130,246,0.06));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--info-color) 14%,transparent),color-mix(in srgb,var(--info-color) 6%,transparent));--badge-border:rgba(59,130,246,0.45);--badge-border:color-mix(in srgb,var(--info-color) 45%,transparent);--badge-text-color:var(--info-color);--badge-ribbon-bg:rgba(59,130,246,0.16);--badge-ribbon-bg:color-mix(in srgb,var(--info-color) 16%,transparent);}.teaching-stats-hero-badge--tier-master{--badge-bg-gradient:linear-gradient(135deg,rgba(139,92,246,0.15),rgba(139,92,246,0.07));--badge-bg-gradient:linear-gradient(135deg,color-mix(in srgb,var(--accent-color) 15%,transparent),color-mix(in srgb,var(--accent-color) 7%,transparent));--badge-border:rgba(139,92,246,0.48);--badge-border:color-mix(in srgb,var(--accent-color) 48%,transparent);--badge-text-color:var(--accent-color);--badge-ribbon-bg:rgba(139,92,246,0.17);--badge-ribbon-bg:color-mix(in srgb,var(--accent-color) 17%,transparent);}.teaching-stats-hero-badge--vocab .teaching-stats-hero-badge-type-icon{background:var(--vocabulary-bg);color:var(--vocabulary-color);}.teaching-stats-hero-badge--vocab .teaching-stats-hero-badge-type,.teaching-stats-hero-badge--vocab .teaching-stats-hero-badge-tier{color:var(--vocabulary-color) !important;text-shadow:none !important;}.teaching-stats-hero-badge--grammar .teaching-stats-hero-badge-type-icon{background:var(--grammar-bg);color:var(--grammar-color);}.teaching-stats-hero-badge--grammar .teaching-stats-hero-badge-type,.teaching-stats-hero-badge--grammar .teaching-stats-hero-badge-tier{color:var(--grammar-color) !important;text-shadow:none !important;}.teaching-stats-hero-badge--slang .teaching-stats-hero-badge-type-icon{background:rgba(245,158,11,0.14);background:color-mix(in srgb,var(--subject-slang) 14%,transparent);color:var(--subject-slang);}.teaching-stats-hero-badge--slang .teaching-stats-hero-badge-type,.teaching-stats-hero-badge--slang .teaching-stats-hero-badge-tier{color:var(--subject-slang) !important;text-shadow:none !important;}.teaching-stats-hero-title{margin:0 0 6px;font-size:1.12rem;color:var(--text-primary);}.teaching-stats-hero-lang{display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;padding:4px 12px;border-radius:var(--border-radius-round);border:1px solid var(--border-color);background:var(--bg-tertiary);font-size:0.78rem;font-weight:600;color:var(--text-secondary);}.teaching-stats-hero-lang i{color:var(--secondary-color);}.teaching-stats-hero-desc{margin:0;font-size:0.84rem;color:var(--text-secondary);line-height:1.45;}.teaching-stats-hero-desc strong{font-size:1.05rem;color:var(--text-primary);}.teaching-stats-hero-desc-sep{margin:0 6px;opacity:0.5;}@media (max-width:720px){.teaching-stats-hero{grid-template-columns:1fr;}.teaching-stats-hero-heading{flex-direction:column;}.teaching-stats-hero-badges{width:100%;justify-content:flex-start;}}.teaching-stats-type-body .teaching-stats-figures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);}.teaching-stats-figure{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);border:1px solid var(--border-color);background:var(--bg-tertiary);text-align:center;}.teaching-stats-figure-value{display:block;font-size:1.45rem;font-weight:700;font-family:var(--font-heading);font-variant-numeric:tabular-nums;line-height:1.15;color:var(--text-primary);}.teaching-stats-figure-label{display:block;margin-top:4px;font-size:0.68rem;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-muted);}.teaching-stats-type-card--vocab .teaching-stats-figure--learned .teaching-stats-figure-value{color:var(--vocabulary-color);}.teaching-stats-type-card--grammar .teaching-stats-figure--learned .teaching-stats-figure-value{color:var(--grammar-color);}.teaching-stats-type-card--slang .teaching-stats-figure--learned .teaching-stats-figure-value{color:var(--subject-slang);}.teaching-stats-mastery-row{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);font-size:0.78rem;color:var(--text-secondary);}.teaching-stats-mastery-label{flex-shrink:0;font-weight:600;}.teaching-stats-mastery-bar{flex:1;height:8px;margin:0;}.teaching-stats-mastery-pct{flex-shrink:0;min-width:2.5rem;text-align:right;font-size:0.85rem;color:var(--text-primary);}.teaching-stats-type-title{min-width:0;}.teaching-stats-summary-icon{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--border-radius-round);background:rgba(99,102,241,0.12);background:color-mix(in srgb,var(--primary-color) 12%,transparent);color:var(--primary-color);font-size:1.1rem;}.teaching-stats-summary-label{display:block;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-muted);}.teaching-stats-summary-value{display:block;font-size:1.5rem;font-weight:700;font-family:var(--font-heading);color:var(--primary-color);}.teaching-stats-type-grid{display:flex;flex-direction:column;gap:var(--spacing-md);}.teaching-stats-type-card{width:100%;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-lg);border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);}.teaching-stats-type-card.is-expanded{padding-bottom:var(--spacing-md);}.teaching-stats-type-card--vocab{border-top:1px solid var(--vocabulary-color);}.teaching-stats-type-card--grammar{border-top:1px solid var(--grammar-color);}.teaching-stats-type-card--slang{border-top:1px solid var(--subject-slang);}.teaching-stats-type-card--vocab 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var(--border-color);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg);animation:teachingRecallPanelIn 0.25s var(--ease-out);box-sizing:border-box;}@keyframes teachingRecallPanelIn{from{opacity:0;transform:scale(0.96) translateY(8px);}to{opacity:1;transform:scale(1) translateY(0);}}.teaching-recall-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-sm);flex-shrink:0;}.teaching-recall-body{overflow-x:hidden;overflow-y:auto;flex:1 1 auto;display:flex;flex-direction:column;gap:var(--spacing-md);min-height:0;}.teaching-recall-progress{margin:0;padding:var(--spacing-sm);border-radius:var(--border-radius-sm);background:var(--bg-tertiary);color:var(--text-secondary);font-size:0.9rem;flex-shrink:0;}.teaching-recall-progress i{margin-right:0.35rem;}.teaching-recall-stage{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch;scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track);}.teaching-recall-stage::-webkit-scrollbar{width:var(--scrollbar-width);}.teaching-recall-stage::-webkit-scrollbar-thumb{border-radius:var(--border-radius-round);background:var(--scrollbar-thumb);}.teaching-recall-stage::-webkit-scrollbar-track{background:var(--scrollbar-track);}.teaching-recall-cards{display:flex;flex-direction:column;}.teaching-recall-cards[hidden]{display:none;}.teaching-recall-card-loading{opacity:0.85;}.teaching-recall-loading{margin:0;color:var(--text-secondary);font-size:0.9rem;}.teaching-recall-error{color:var(--danger-color);}.teaching-recall-footer{display:flex;justify-content:stretch;gap:var(--spacing-sm);margin-top:var(--spacing-md);flex-wrap:wrap;flex-shrink:0;}.teaching-recall-nav{display:flex;width:100%;justify-content:space-between;align-items:center;gap:var(--spacing-sm);flex-wrap:wrap;}.teaching-recall-nav-left,.teaching-recall-nav-right{display:flex;align-items:center;gap:var(--spacing-sm);flex-wrap:wrap;}.teaching-recall-nav button:disabled{opacity:0.45;cursor:not-allowed;}.teaching-recall-card{padding:var(--spacing-md);border-radius:var(--border-radius-lg);background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:var(--transition);}.teaching-recall-card[hidden]{display:none;}.teaching-recall-card.is-active{animation:teachingRecallCardIn 0.2s var(--ease-out);}@keyframes teachingRecallCardIn{from{opacity:0;transform:translateX(12px);}to{opacity:1;transform:translateX(0);}}.teaching-recall-card-head{display:flex;justify-content:space-between;align-items:center;font-size:0.8rem;font-weight:700;letter-spacing:0.3px;text-transform:uppercase;color:var(--text-muted);margin-bottom:var(--spacing-sm);padding-bottom:var(--spacing-xs);border-bottom:1px solid var(--border-color);}.teaching-recall-qnum{color:var(--primary-color);font-weight:800;}.teaching-recall-qtype{padding:2px 8px;border-radius:var(--border-radius-round);background-color:rgba(99,102,241,0.12);background-color:color-mix(in srgb,var(--primary-color) 12%,transparent);color:var(--primary-color);font-weight:600;font-size:0.7rem;}.teaching-recall-image img{max-width:100%;border-radius:var(--border-radius-md);margin-bottom:var(--spacing-sm);box-shadow:var(--shadow-sm);}.teaching-recall-prompt{font-size:1.05rem;font-weight:600;line-height:1.6;color:var(--text-primary);margin:0 0 var(--spacing-sm);}.teaching-recall-choices{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-top:var(--spacing-sm);}.teaching-recall-choice{display:flex;align-items:flex-start;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);background:var(--bg-tertiary);border:1px solid var(--border-color);cursor:pointer;transition:var(--transition-fast);}.teaching-recall-choice:hover{background:var(--hover-bg);border-color:var(--primary-color);}.teaching-recall-choice input[type="radio"]{margin-top:3px;accent-color:var(--primary-color);}.teaching-recall-choice span{color:var(--text-primary);font-weight:500;line-height:1.5;}.teaching-recall-hint{margin:var(--spacing-sm) 0;padding:var(--spacing-sm) var(--spacing-md);font-size:0.9rem;font-weight:500;color:var(--text-primary);background-color:rgba(245,158,11,0.08);background-color:color-mix(in srgb,var(--warning-color) 8%,transparent);border:1px solid rgba(245,158,11,0.22);border:1px solid color-mix(in srgb,var(--warning-color) 22%,transparent);border-radius:var(--border-radius-md);line-height:1.5;}.teaching-recall-hint i{margin-right:var(--spacing-xs);color:var(--warning-color);}.teaching-recall-input{width:100%;margin-top:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;font-weight:500;color:var(--text-primary);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-md);transition:border-color 0.2s ease,box-shadow 0.2s ease;box-sizing:border-box;}.teaching-recall-input::placeholder{color:var(--text-muted);}.teaching-recall-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(99,102,241,0.2);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary-color) 20%,transparent);}.teaching-recall-textarea{resize:vertical;min-height:80px;line-height:1.6;font-family:var(--font-primary);}.teaching-recall-result-page:not([hidden]){display:flex;flex-direction:column;gap:var(--spacing-md);animation:teachingRecallCardIn 0.2s var(--ease-out);}.teaching-recall-result-page[hidden]{display:none;}.teaching-recall-summary{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-sm);border-radius:var(--border-radius-md);background:var(--gradient-primary);color:var(--text-inverted);font-weight:800;text-align:center;}.teaching-recall-summary-page{flex-direction:column;padding:var(--spacing-lg) var(--spacing-md);margin-bottom:0;gap:var(--spacing-xs);}.teaching-recall-summary-title{margin:0;font-size:0.85rem;font-weight:700;letter-spacing:0.04em;text-transform:uppercase;opacity:0.9;}.teaching-recall-summary-score{font-size:1.1rem;}.teaching-recall-summary-page .teaching-recall-summary-score{font-size:1.75rem;line-height:1.2;}.teaching-recall-summary-percent{font-size:1.3rem;opacity:0.95;}.teaching-recall-summary-page .teaching-recall-summary-percent{font-size:1.5rem;}.teaching-recall-summary-mastery{font-size:0.95rem;font-weight:700;opacity:0.95;}.teaching-recall-summary-stars{display:inline-flex;gap:2px;margin-left:var(--spacing-xs);}.teaching-recall-summary-page .teaching-recall-summary-stars{margin-left:0;margin-top:var(--spacing-xs);gap:4px;}.teaching-recall-summary-star{font-size:1.2rem;color:rgba(255,255,255,0.35);line-height:1;}.teaching-recall-summary-page .teaching-recall-summary-star{font-size:1.6rem;}.teaching-recall-summary-star.is-on{color:var(--warning-color);}.teaching-recall-result-list{display:flex;flex-direction:column;gap:var(--spacing-xs);}.teaching-recall-result-item{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);border:1px solid var(--border-color);background:var(--bg-tertiary);color:var(--text-primary);font:inherit;font-weight:600;cursor:pointer;text-align:left;transition:var(--transition-fast);}.teaching-recall-result-item:hover{border-color:var(--primary-color);background:var(--hover-bg);}.teaching-recall-result-item-q{color:var(--primary-color);font-weight:800;}.teaching-recall-result-item-status{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.9rem;}.teaching-recall-result-item.is-correct .teaching-recall-result-item-status{color:var(--success-color);}.teaching-recall-result-item.is-wrong .teaching-recall-result-item-status{color:var(--danger-color);}.teaching-recall-result-hint{margin:0;font-size:0.85rem;color:var(--text-secondary);text-align:center;}.teaching-recall-feedback{margin-top:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);border-left:4px solid transparent;background:var(--bg-tertiary);}.teaching-recall-feedback.is-correct{border-left-color:var(--success-color);background:var(--feedback-bg);}.teaching-recall-feedback.is-wrong{border-left-color:var(--danger-color);background-color:rgba(239,68,68,0.07);background-color:color-mix(in srgb,var(--danger-color) 7%,transparent);}.teaching-recall-feedback-status{display:flex;align-items:center;gap:var(--spacing-xs);font-weight:700;font-size:0.9rem;margin-bottom:var(--spacing-xs);}.teaching-recall-feedback.is-correct .teaching-recall-feedback-status{color:var(--success-color);}.teaching-recall-feedback.is-wrong .teaching-recall-feedback-status{color:var(--danger-color);}.teaching-recall-feedback-body{font-size:0.9rem;line-height:1.5;color:var(--text-primary);}.teaching-recall-feedback-body p{margin:2px 0;}.teaching-recall-feedback-explain{margin-top:var(--spacing-xs);padding-top:var(--spacing-xs);border-top:1px dashed var(--border-color);font-style:italic;color:var(--text-secondary);}.teaching-recall-feedback-mastery{margin-top:var(--spacing-xs);font-weight:700;}.teaching-recall-feedback.is-correct .teaching-recall-feedback-mastery{color:var(--success-color);}.teaching-recall-feedback.is-wrong .teaching-recall-feedback-mastery{color:var(--text-secondary);}.teaching-recall-card input:disabled,.teaching-recall-card textarea:disabled{opacity:0.6;cursor:not-allowed;background:var(--bg-tertiary);}[data-theme="dark"] .teaching-recall-card{background:var(--bg-secondary);border-color:var(--border-color);box-shadow:var(--shadow-sm);}[data-theme="dark"] .teaching-recall-result-item{background:var(--bg-tertiary);border-color:var(--border-color);}[data-theme="dark"] .teaching-recall-result-item:hover{background:var(--hover-bg);border-color:var(--primary-color);}[data-theme="dark"] .teaching-recall-hint{color:var(--text-primary);background-color:rgba(251,191,36,0.1);background-color:color-mix(in srgb,var(--warning-color) 10%,transparent);border-color:rgba(251,191,36,0.28);border-color:color-mix(in srgb,var(--warning-color) 28%,transparent);}[data-theme="dark"] .teaching-recall-hint i{color:var(--warning-color);}[data-theme="dark"] .teaching-recall-choice{background:var(--bg-tertiary);}[data-theme="dark"] .teaching-recall-choice:hover{background:var(--hover-bg);border-color:var(--primary-color);}[data-theme="dark"] .teaching-recall-input{background:var(--bg-tertiary);border-color:var(--border-color);color:var(--text-primary);}[data-theme="dark"] .teaching-recall-input::placeholder{color:var(--text-muted);}[data-theme="dark"] .teaching-recall-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(139,140,248,0.25);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary-color) 25%,transparent);}@media (prefers-reduced-motion:reduce){.teaching-recall-panel,.teaching-recall-card.is-active,.teaching-recall-result-page{animation:none;}}